PHP 8.0 errors

Hi there,

I thought I’d let you know that this plugin has problems with PHP 8.0, feeds don’t work properly, and attempts to access the feed result in this error message:

?call_custom_simple_rss=1&csrp_cat=12/ is invalid XML, likely due to invalid characters. XML error: Invalid document end at line 2, column 1

This is a great plugin, I’ve just reverted to PHP7.4 until this is fixed