Thanks for your help and explaining your philosophy of debugging. I found the issue, it was ublock origin which was preventing the request. My model name is ca

Thanks for your help and explaining your philosophy of debugging. I found the issue, it was ublock origin which was preventing the request. My model name is called "Ads" so ublock think it was really ads ans so preventing the request and make the browser reload. After deactivating ublock origin the request is executed and I receive data on the server. It still crash but now I can debug it and make my code work. Thanks for your help and as you said there is no secret. You just need to work it out until you find out. thanks !