Here's the line directly from the log :
[05-Dec-2018 18:24:16 America/New_York] PHP Notice: Undefined variable: langue in /home/papi/public_html/application/controllers/khamai.php on line 197
Another example :
[05-Dec-2018 19:12:29 America/Toronto] PHP Notice: Trying to get property of non-object in /home/papi/public_html/application/models/ipblock.php on line 28
And another:
[14-Aug-2018 06:31:20 America/New_York] PHP Notice: Undefined variable: langue in /home/papi/public_html/application/controllers/khamai.php on line 210