Issue : Fatal error in module file

[JUJE Triathlon]

Hi all,

Since several days I have this issue on my prestashop backoffice when I try to go into the modul section :

I can't find any solutions to solve this problem. Anybody had already have the same issue ?

Please find below informations regarding my presta :

PS Version : 1.6.1.23
URL website : https://www.juje.fr/fr/
Theme : personal
Code : modified 
Hosting : OVH
Issue with all browsers

Thanks in advance for your help,

Regards

Julien