Attachment validation Nintex Form

I'd say it should work...

if you click on the exception in developer console, where does it point you to?

can you try to remove validation rule and check developer console, whether the error still doesn't appear there?

try to configure it as advised here - https://community.nintex.com/message/42747?commentID=42747#comment-42747 

ie. let the function return just a number and make logical comparison within the rule itself.

I just removed all the rules from the form, saved, published and then tested just submitting the for without any required field filed. The same errors are displayed in the chrome console:

The only one that points me somewhere is the highlighted one, that gets me to

Still nothing looks unfamiliar or wrong.

I've tested with every single field in the form, letting it be the only one not filled, all of them display the same error after the form has been submitted.

The only custom validator I am using is a date one, where I validate if the date has been fulfilled and if it is not before today, it works fine so i don't think it is that field fault.

I was using that JavaScript validation function and other ones but none of them seems to work. I'm using a corporate version of Nintex, could it be that it has restrictions or something like that? It doesn't seems to work no matter what I do.

I was thinking that maybe recreate the form would help, but I dont really know if that would be a good idea.

Shouldn't this control validation

just work fine without the need of javascript? I've tried erasing this validation, erasing the field, erasing the rule, basically everything.

I just removed all the rules from the form, saved, published and then tested just submitting the for without any required field filed

so you definitely have an error on the page. sounds to be some syntax error like missing/one more quote, brace, comma, etc.

review all your javascript code, rule's formulas, calculated value controls, etc.

if it doesn't point you to a place in code where the error happened once you click on one of first two rows, it means parser cannot correctly interpret page code. since it pointed you to a curly bracket somewhere in the middle of CSS declarations it looks like it expects the brackets closes some block of code.

note, it may well be problem of input data provided into some control and you process by a formula/rule/code. if it contains some sensitive characters like quotes, braces, commas, slashes... and they are not properly escaped they might be misinterpreted and broke rest of the page code.

Shouldn't this control validation just work fine without the need of javascript? 

yes, it should. but if you have an error on the page you can never be sure which rules/calculations/code is in fact executed and which not

Hi Marian, I basically deleted every single field and every single validation and rule. After checking, I had an error in a date field. It took a lot of time to check for this but I've finally fixed it, the control validation is working fine now, i think every field validation should have a try catch or something like that in order to not crash the whole page if something is wrong, and it definitely should have a better error message to check where the error was. Thank you so much for your support.