Tons Of Php Warings In My Log Tools.php On Line 1149

[f31n]

Hi,

i just moved my shop from a shared host without a apache log to my own server and now i realise that i get tons of php warning erros:

 

[Fri Mar 04 11:53:55.812631 2016] [:error] [pid 12751] [client 157.55.39.95:11673] PHP Warning:  preg_replace(): Compilation failed: invalid range in character class at offset 24 in /var/www/html/classes/Tools.php on line 1149

 

My shop is running on an apache with php5 installed and i'm using PrestaShop™ 1.6.0.6

 

do you have any clue why these errors occur? 

 

When i access the shop i get like 30-70 entries of that in my log at once

 

thanks for your help in advance,

 

best regards