3.0.3.9 PHP Unknown: mb_strtolower():

Hi

I gets this line up to 10 times every minute in the error log;

PHP Unknown: mb_strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in /home/rubankve/public_html/system/helper/utf8.php on line 30

I have change PHP version and tested 8.0-8.3 with no change. Have tried to see if there is one other module making it, but not see any.

Search the net, finding some similar issues, but with no solution. Someone have and find that was the problem?

OC 3.0.3.9
PHP 8.3
Default Theme

Please paste that line here.

Also did you see any posts that have this:
- mb_strtolower($value);
+ mb_strtolower((string) $value);
Not seeing that line, that is my only guess.
Mike

Looking in your raw web access logs for the times the error occurs, may help you track down the cause.

You'll want this in the meantime until you find it:
https://www.opencart.com/index.php?rout ... n_id=25968