Unexpected token < in JSON at position 0 error

hello , i get this message when trying to view the form using the web,
also if tested nd uploaded my tool to odk online validator and there is no errors in it,

@Ahmad6694, maybe the first thing you should be doing at this stage is making a quick check with this online validator to see if there are any syntax issues in it.

i did that and there is no errors, kindly note that my survey contain 1600 question.

OK, so the issue is with the number of questions you have used for the survey project. Try to break your survey into 2 or if needed into 3 different surveys and you should be able to load your survey project without any issue.