Unexpected token < in JSON at position 0 ,loading error

[adminpro]

Is there anything that can be changed on server setting side or application side to accomodated 660 questions ?
because this error “Loading Error ,Unexpected token < in JSON at position 0” is being caused by many questions, because when i splitled the form in two different form the error dissapered? or thereis an number of question we should not exceed in one form? if so what is the maximum limit

[Kal_Lam]

@adminpro, is this an issue in your self hosted server?

[adminpro]

no i use kobotoolbox server.

[Kal_Lam]

Seems like it is the same issue we had in our other post:

Loading Error ,Unexpected token < in JSON at position 0

@adminpro, yes it affects the loading when you have a long list of questions or choices in your survey project. Please be informed that the web server only allows each request to take 120 seconds. And if a form is not able to load even within this 120 seconds your forms do not get deployed/loaded. You could thus solve this by either trying to collect your data through Collect android app or build your survey project using an external select (if you have a long list of choices).

[adminpro]

Actually the problem is not the long list of choices, the problem is having many questions, in one form. i have 630 questions to be answered.

[Kal_Lam]

@adminpro, FYI kindly please be informed that you see this issue with two different scenarios:

1. When you have a long list of questions
   or,
2. When you have a long list of choices

So maybe 630 questions in your case should be a long list of questions.

[adminpro]

@Kal_Lam

When you have a long list of questions

Yes you are correct, this error happen because i have a long list of questions.