date.setZone is not a function in Edge

[galaczi]

I have the following input field:

<input type="datetime-local" name="{{name}}" value="{{ inputDate.setZone('UTC+1').toFormat("yyyy-MM-dd'T'hh:mm") ?? '' }}">

It is displayed correctly in my edge template. However upon form submission I get the error inputDate.setZone is not a function.

I am confused why is it even checked when I submit the form. A hint might be that I have app/Middleware/SilentAuth.ts:19:5 in my stack trace?

[RomainLanz]

Hey @galaczi! 👋🏻

Could you please share your controller code?
It seems that you are displaying this view again, and inputDate is not set.

[galaczi]

Looks like the form validation failed and I reassigned the inputDate variable with the value from flashMessages, which was just a string. Hence setZone does not exist on it.