wpsnoop: fix ASPL Email PDF Invoice plugin conflicts, errors & issues
When the plugin ASPL Email PDF Invoice conflicts or throws a PHP error we hope wpsnoop can help you to fix the issue quickly.
Discover which shortcodes wp-options PHP functions database tables and files are created by ASPL Email PDF Invoice, plus learn which plugins and/or themes could be in conflict with ASPL Email PDF Invoice.
Troubleshooting theme and plugin conflicts is easier when you know what ASPL Email PDF Invoice leaves behind after uninstalling it from a WordPress installation, there is a list down below for your convenience.
Expert advice is recommended if you are not technically proficient with PHP, MySQL etc. View support options for ASPL Email PDF Invoice
Get professional support for ASPL Email PDF Invoice here
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What does ASPL Email PDF Invoice version 1.1.0 add to WordPress? Answers Here.
This is an automatically generated report - it is possible for ASPL Email PDF Invoice to perform differently in your installation, previous versions before 1.1.0 may have created a different set of shortcodes, used different function names or could have created entirely different database tables to store settings and operate. This is not an exhaustive list but shows how version 1.1.0 of ASPL Email PDF Invoice behaves when installed and removed on a clean installation of WordPress.
We have not tested individual shortcodes, features or settings of this plugin but instead have concentrated on the potential for obvious errors and conflicts which can occur, if you need help with the plugin in your local installation you can get WordPress help and support for ASPL Email PDF Invoice by clicking here.
Our testing covered the free version of this plugin there may or may not be a paid version or premium version available for purchase that unlocks additional features and could behave in a slightly or very different manner.
Summary of WordPress plugin analysis: ASPL Email PDF Invoice
Plugin Slug: aspl-email-pdf-invoice
Internal ID: 5281
Addon Type: Plugin
Version: 1.1.0
Price:
Free
Source: WordPress.org
Files: 131 (449.97kB)
Short Codes: [ / ] 0
Database Tables: 0
Function Count: 12
Code Review: Search Provit
Which new files does ASPL Email PDF Invoice add to WordPress?
This section will populate with a table showing an icon, size and filepath.
The plugin ASPL Email PDF Invoice added 131 new files when it was installed with WP-CLI in our WordPress test environment.
| Type & Path | Size | Conflicts |
|---|---|---|
| wp-content/uploads/ | The wp-content/uploads/ directory has potential conflicts with at least 1495 other plugins or themes. | |
| wp-content/uploads/2022/ | The wp-content/uploads/2022/ directory has potential conflicts with at least 1367 other plugins or themes. | |
| wp-content/uploads/2022/02/ | The wp-content/uploads/2022/02/ directory has potential conflicts with at least 1367 other plugins or themes. | |
| wp-content/plugins/aspl-email-pdf-invoice/ | 449.97kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/aspl_email_pdf_invoice.php | 8.72kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/css/ | 168.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/css/aspl_pips_custom_css.css | 168.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/ | 439.91kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/aspl-pips-invoice-pdf-template.php | 3.54kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/ | 432.88kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/changelog.htm | 8.93kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/ | 61.04kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/__construct.htm | 1.91kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/acceptpagebreak.htm | 1.65kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/addfont.htm | 1.71kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/addlink.htm | 871.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/addpage.htm | 2.09kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/aliasnbpages.htm | 1.14kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/cell.htm | 3.26kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/close.htm | 690.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/error.htm | 820.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/footer.htm | 1.06kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/getpageheight.htm | 548.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/getpagewidth.htm | 546.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/getstringwidth.htm | 664.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/getx.htm | 576.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/gety.htm | 576.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/header.htm | 1.05kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/image.htm | 3.51kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/index.htm | 3.27kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/line.htm | 910.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/link.htm | 1.23kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/ln.htm | 780.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/multicell.htm | 2.34kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/output.htm | 1.73kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/pageno.htm | 525.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/rect.htm | 1.22kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/setauthor.htm | 977.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/setautopagebreak.htm | 1.03kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/setcompression.htm | 958.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/setcreator.htm | 1.03kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/setdisplaymode.htm | 1.67kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/setdrawcolor.htm | 1.27kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/setfillcolor.htm | 1.25kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/setfont.htm | 3.19kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/setfontsize.htm | 646.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/setkeywords.htm | 1.01kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/setleftmargin.htm | 924.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/setlinewidth.htm | 857.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/setlink.htm | 997.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/setmargins.htm | 1.01kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/setrightmargin.htm | 845.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/setsubject.htm | 970.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/settextcolor.htm | 1.19kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/settitle.htm | 960.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/settopmargin.htm | 841.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/setx.htm | 789.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/setxy.htm | 852.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/sety.htm | 953.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/text.htm | 1.11kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/doc/write.htm | 1.49kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/FAQ.htm | 10.86kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/font/ | 36.91kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/font/courier.php | 432.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/font/courierb.php | 437.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/font/courierbi.php | 444.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/font/courieri.php | 440.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/font/helvetica.php | 3.42kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/font/helveticab.php | 3.43kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/font/helveticabi.php | 3.43kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/font/helveticai.php | 3.43kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/font/symbol.php | 4.36kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/font/times.php | 3.42kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/font/timesb.php | 3.42kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/font/timesbi.php | 3.43kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/font/timesi.php | 3.42kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/font/zapfdingbats.php | 3.44kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/fpdf.css | 1.29kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/fpdf.php | 46.92kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/install.txt | 547.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/license.txt | 326.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/makefont/ | 116.21kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/makefont/cp1250.map | 4.44kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/makefont/cp1251.map | 4.66kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/makefont/cp1252.map | 4.43kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/makefont/cp1253.map | 4.16kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/makefont/cp1254.map | 4.42kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/makefont/cp1255.map | 4.20kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/makefont/cp1257.map | 4.33kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/makefont/cp1258.map | 4.39kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/makefont/cp874.map | 4.16kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/makefont/iso-8859-1.map | 4.50kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/makefont/iso-8859-11.map | 4.58kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/makefont/iso-8859-15.map | 4.47kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/makefont/iso-8859-16.map | 4.52kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/makefont/iso-8859-2.map | 4.46kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/makefont/iso-8859-4.map | 4.48kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/makefont/iso-8859-5.map | 4.61kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/makefont/iso-8859-7.map | 4.33kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/makefont/iso-8859-9.map | 4.51kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/makefont/koi8-r.map | 4.63kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/makefont/koi8-u.map | 4.63kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/makefont/makefont.php | 10.18kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/makefont/ttfparser.php | 17.13kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/tutorial/ | 149.87kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/tutorial/20k_c1.txt | 5.37kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/tutorial/20k_c2.txt | 7.11kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/tutorial/calligra.php | 3.59kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/tutorial/calligra.ttf | 39.18kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/tutorial/calligra.z | 21.95kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/tutorial/countries.txt | 427.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/tutorial/index.htm | 822.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/tutorial/logo.png | 2.32kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/tutorial/makefont.php | 135.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/tutorial/tuto1.htm | 4.60kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/tutorial/tuto1.php | 151.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/tutorial/tuto2.htm | 5.42kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/tutorial/tuto2.php | 742.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/tutorial/tuto3.htm | 8.64kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/tutorial/tuto3.php | 1.65kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/tutorial/tuto4.htm | 9.45kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/tutorial/tuto4.php | 2.08kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/tutorial/tuto5.htm | 11.91kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/tutorial/tuto5.php | 2.17kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/tutorial/tuto6.htm | 11.45kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/tutorial/tuto6.php | 2.29kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/tutorial/tuto7.htm | 8.23kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/fpdf/tutorial/tuto7.php | 248.00B | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/include/pdf_data.php | 3.49kB | No known conflicts with other themes or plugins. |
| wp-content/plugins/aspl-email-pdf-invoice/readme.txt | 1.18kB | No known conflicts with other themes or plugins. |
| wp-content/uploads/aspl_pdf/ | No known conflicts with other themes or plugins. |
Which new shortcodes does ASPL Email PDF Invoice add to WordPress?
The plugin ASPL Email PDF Invoice did not add any shortcodes when it was installed with WP-CLI in our WordPress test environment.
What new PHP functions does ASPL Email PDF Invoice declare when it is active?
Installing ASPL Email PDF Invoice added 12 new functions to Wordpress at run-time. These functions are internal and generally aren't meant to be used except by developpers who wish to interface with the plugin to enhance or alter its behavior.
Using ASPL Email PDF Invoice from the command line with WP-CLI
The following commands are provided for convenience and should only be used if you understand how WP-CLI works. These commands refer to a single WordPress instance and may need to be modified if you are working with a Multisite installation.
How to install ASPL Email PDF Invoice from the command line with WP-CLI
Navigate to the root of your WordPress installation and type the following command:
wp plugin install aspl-email-pdf-invoice
How to activate ASPL Email PDF Invoice from the command line with WP-CLI
To immediately activate ASPL Email PDF Invoice after WP-CLI downloads the latest version you can use the following command:
wp plugin install aspl-email-pdf-invoice --activate
How to reinstall ASPL Email PDF Invoice from the command line with WP-CLI
To force a reinstallation of ASPL Email PDF Invoice which overwrites the current plugin without asking for confirmation you can use the following command:
wp plugin install aspl-email-pdf-invoice --force
How to update ASPL Email PDF Invoice to the latest version from the command line with WP-CLI
wp plugin update aspl-email-pdf-invoice
How to delete ASPL Email PDF Invoice from the command line with WP-CLI
wp plugin delete aspl-email-pdf-invoice
Where can you download earlier versions of ASPL Email PDF Invoice?
Whenever possible you should use the latest version of plugins and themes, however if you have recently updated and discovered that you need to install an earlier version you may be able to download other versions of ASPL Email PDF Invoice from the WordPress repository by visiting this link.
Please note that installing earlier versions of a theme or plugin is not generally a recommended course of action for most users and could re-introduce security, stability or other issues in ASPL Email PDF Invoice
About our testing enviroment
Tests were conducted using Apache 2.4.29, PHP 7.2 on Ubuntu 18.04, MySQL 5.7.33 and WordPress 5.9
It is very possible that different versions of PHP such as PHP 8.0, PHP 7.4, or PHP 7.3 could behave differently with ASPL Email PDF Invoice. Different versions of WordPress could implement the features of this plugin in slightly different ways as well.
