I get the error-log on all my backdrop sites filled up with:
"mbstring.http_input is deprecated in Unknown on line 0"

Is it from the .htaccess file or is there a problem somewhere?

Could it be from converting the databases to utf8?

Sites functions fine though.

Comments

Deprecated functions normally happen when you are using a different version of PHP... have a look at the original version and change your new one to that.

 

Hope this helps.

Do you see "mbstring.http_input" in your .htaccess or if you search your codebase?

Yes, there are several lines with that - as well as "mbstring.http_output".

This is from the 'recommended' htaccess - I just changed it as per last upgrade. Can those lines be eliminated?