Hey Don,
Thanks for posting here, and calling this to my attention. I am (slowing) weeding these messages out of all the MSTW plugins. Easy fix …
First these are not PhP “errors”; they are “warnings”. Errors halt execution, while warnings generally cause no real harm.
On any live system, “debug” messages should not appear on the front end displays. They should be either redirected to the debug.log file or dismissed. There are posts all over the web on how to achieve this, including one on shoalsummitsolutions.com.
Let me know.
-Mark