ABH collection

Prestashop 1.7.6.5 Hi every body, this is my first time on the form, i'm not a developper, i have a problem, i can install the modul 'productcomments' , i have this error message : FR: L'action install est impossible pour le module productcomments. Malheureusement, le module n'a pas fourni plus de détails. EN: The install action is impossible for the productcomments module. Unfortunately, the module did not provide more details. Just bought a template, and the developper says, i have to ask prestashop because this problem doesn't come from him. He gave me this: "(1/1) ContextErrorException Warning: "continue" targeting switch is equivalent to "break". Did you mean to use "continue 2"? in UnitOfWork.php line 2636". Is somebody can helping me ? Thank you so much Best REGARDS Dom