Can you try adding a @ before "preg_match" on line 90 of formGenerator.php and see if that resolves it.  It should look like this: 

    if (!is_array($value) && @preg_match("/\t/", $value)) {

Let me know if that works for you.

Thanks!

im seeing this error in your formgenerator plugin: Deprecated: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated  (line 90)

is there possibly a fix or update for this, im assuming its PHP8 thats causing it.