SEO URL rewriter issue

[johndoes]

I'm kind of hoping someone else who has had this problem will chime in and describe how it happens. I haven't yet had time to dup it; I just saw it yesterday. Obviously I am going to try.

Just started receiving this error after installing CEON URI Mapping. Merged files as suggested and followed install instructions correctly. Changed the URI in mens clothing category and it saved fine. When I try to tick the auto generate box and click save I receive a Not Found error in Admin for this page - categories.php?action=update_category&cPath=

When I check Logs I receive this error:

"Request URI: /categories.php?action=update_category&cPath=, IP address: xx.x.xxx.xxx
#1 trim() called at [/home/x/public_html/x/includes/functions/general.php:441]
#2 zen_not_null() called at [/home/x/public_html/includes/classes/upload.php:87]
#3 upload->parse() called at [/home/x/public_html/x/categories.php:225]

[22-Aug-2018 15:23:02 UTC] PHP Warning: trim() expects parameter 1 to be string, object given in /home/x/public_html/x/includes/functions/general.php on line 441"

Going to have to remove. Can anyone recommend a different seo rewriter which works with 155f?