Blocklayered module not working prestashop 1.6

[pj06novo]

Hi everyone,

I have a bug on my prestashop website that i don't know how to fix.
My blocklayered module is not working... I've tried refreshing cache and indexes and also restored the module with original one but it's not working... I've also setted permissions to 777 for all the folders and files of the module...
Here is the error line:

    v_24_2e5bc2f239b0cac64f2bff372a426d98.js:4 GET https://www.bobo-sport.fr/modules/blocklayered/blocklayered-ajax.php?layered_category_12=12&id_category_layered=13&_=1532013197475 500 ()

 You can see the problem on this page for exemple: https://www.bobo-sport.fr/13-soins

Could you please have a look to my problem?
Thanks a lot for your help!