Warning: preg_replace(): Compilation failed: range out of order in character cla

I’m having the same problem too.

Salam n Hola

Here’s an excerpt from my err.log:

[22-Nov-2016 13:01:58 UTC] PHP Warning: preg_replace(): Compilation failed: range out of order in character class at offset 4 in /home/myacc/public_html/wp-content/plugins/amp-toolbox/amp-toolbox.php on line 457
[22-Nov-2016 13:02:32 UTC] PHP Warning: preg_replace(): Compilation failed: range out of order in character class at offset 4 in /home/myacc/public_html/wp-content/plugins/amp-toolbox/amp-toolbox.php on line 409

Please advise

I just installed this and found the same issue, i see no support as per usual from its creator so i fixed it myself and will share with you, if you go into /wp-content/plugins/amp-toolbox/amp-toolbox.php and remove lines:

$text = str_replace('[title]', preg_replace('/[^a-Z0-9-. ]/', '', $post->post_title), $text);

from line 409 and 457

once i did that and saved the file it takes away the error and the plugin still works just fine ?? Example: https://battlefieldinformer.com/battlefield-1-elite-classes/