wpsnoop Function ysms_smi_menu() conflicts found in 1 plugin

A php function called ysms_smi_menu() is used in 1 wordpress plugin/theme and could produce a potential conflict if the wrong combination of themes and plugins is used on your site.

To prevent this from happening developers are encouraged to use namespaces and scopes that isolate their functions from colliding with other functions but this is not always done correctly.

We hope this reference helps you to find PHP Fatal error: Cannot redeclare ysms_smi_menu()

The following plugin registers a function called ysms_smi_menu():

Plugin
IsSiY (Include second Sitemap into Yoast) Wordpress SEO Extension