Deprecated function: mb_strlen(): Passing null to parameter #1 ($string) of type string is deprecated in _filter_html_image_secure_process

mb_strlen isn't called on line 786. That Drupal instance is patched.

Was tagged for steps to reproduce which are still needed.

These kind of tickets need to do some research and figure out why that value is null vs putting an empty check which could mask a larger issue.

The line is 786 in the issue description.

will investigate further. this might be an applied patch

arora.shivani → made their first commit to this issue’s fork.

Changes are made on on 11.x (our main development branch) first, and are then back ported as needed according to our policies.

Since there isn't steps to reproduce going to close out. But if still a valid bug in D11 please re-open updating summary with missing info.