First of all, thank you for your answer, regarding the verification I have already done it with this online software ( https://jsonlint.com/), but no error detected. Also regarding point 2, do you have a better idea? Thank you very much for your help.

what do you mean by "manually"? moreover normally the index should show me the content of the json file but currently I see the search bar but not the content of the json file. I put the json file and the index in the different links I don't know if you tried to look please 🙏🏾

Okay thanks ! I'll try it