Error 400 when saving form

Hi,

I have made my firs test (form fillin) and it went well.
I try on other part of same webside and I have error respons after clicking ‘save’ button in form.

WebUI.click(findTestObject(‘test/button_save’)):

Error looks like this, anyone can explain ?

Error: Request failed with status code 400
exports https://test.com/static/js/2.a6e58504.chunk.js:2
exports https://test.com/static/js/2.a6e58504.chunk.js:2
M https://test.com/static/js/2.a6e58504.chunk.js:2

Ok I have found the reason. One Input have to be integer.