Error in subs.php line 2415

Hi,



I run SMF 2.3.6 and get an error in the log



http://*****/index.php?http://*****/

8: Array to string conversion

File: /customers/3/9/1/*****/httpd.www/Sources/Subs.php

Rad: 2415



The error repeats for all users at different times since november 12th...



Error in subs.php line 2415