i got this error when i execute 1 hour
You have a ‘check’ in your scenario that is validating the response code returned. It will look something like .check(302). That is telling Gatling that you expect your server to return an http status code of 302. IN fact your server is responding with a status code in the 200 range.
If you used Gatling recorder to create the scenario it will add these checks when it records the simulation. You can remove the check line if you did not intend to validate that you got a 302.