Unexpected token < in JSON at position 0 at preview stage

In preview stage, it sometimes shows that ‘‘Error occured during the loading of this form. It is recommended not to use this form for data entry until this is resolved’’… How can I solve this? Might it there be any problem in data entry?

Welcome @pyonethazin,
Probably a syntax error. Did you check your form with the online validator?

I already checked and it’s fine.

@pyonethazin, what is the total number of questions in your survey form?

About 1000.

So it’s an issue with the total number of questions you have in your survey. You will need to break your survey into 2 or maybe even 4 different surveys. Doing so the system should be able to load your survey project.

If I use in this way,1000questions ,will it there be any problem in entry stage?

There could be loading issues. Hence it would be easy for the system with fewer questions.