An error ocurred while submitting the form

You can have more information looking at the engine logs. From the Studio, you can open the engine logs from the Help menu.

I have the same problem.

The engine logs show this:

Error while validating expected inputs
Explanations:
Expected input [authorizationRequestInput] is missing
[http-nio-8080-exec-1|87] o.b.w.r.s.a.r.CommonResource - Error while validating expected inputs
Explanations:
Expected input [authorizationRequestInput] is missing
[internalTasksScheduler-1|68] o.b.e.p.TemporaryContentScheduler - 0 outdated temporary Content has been deleted

I have Bonita community 2023.2.

I have the same problem, i.e. I made two buttons to refuse or accept, when I click one of them to submit the following message pops up "An error occurred while submitting the form".

I choose Submit task in Action and I fill the "Data sent on click" with {"cAuthorization" : true} and {"cAuthorization" : false} to the accept and refuse button respectively.

cAuthorization is a boolean attribute.

I delete the formOutput variable created automatically by the UI Designer.

Update: I actually managed to solve the problem! Still, I wanted to thank you all!