Hit a 400 or 500 error? What to do | LimeSurvey

Hit a 400 or 500 error? What to do

About these errors

Sometimes your survey site shows an error such as 400 Bad Request, 500 Internal Server Error or a message about a CSRF token, for example while you save a question, open the editor or add participants. Usually the cause is on our platform, not something you did, and there is no setting that fixes it. Your part is to tell us.

Try this first

  1. Reload the page.
  2. Try another browser, or a private window.
  3. Wait a few minutes and try again. Many incidents are fixed for all sites quickly.

If the error comes back, contact support.

What to send support

Contact support as described in Get support and include:

  • the exact error text, or a screenshot,
  • what you did, step by step, when the error appeared, for example "I opened survey 123456, clicked question 3 and the error showed",
  • the survey ID,
  • your browser, for example Chrome, Firefox or Safari.

What happens next

  • Support may ask for your written consent to access your survey site. A reply such as "I agree" is enough. You never share your password.
  • Our engineers usually fix the problem on the server.
  • When it is fixed, we ask you to try the same action again and confirm.

An error caused by a custom theme may need an engineer to repair your survey site.

Next steps

FAQ

Did I break something?

Almost never. These errors usually come from the platform, not from what you did.

Should I try again and again?

Try the three steps above once. If the error comes back, contact support instead of repeating the action.