(TypeError) : cannot read property "Confirm" of undefined.

In my project (Vaadin 12.0+) there a problem occurs when i want to filter by one combobox to another. But this error occur.
How can i do for this?
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same problem with v14.1.17, just added a Formlayout with a few textfields, a datepicker and the project doesn’t run anymore

Restarting Payara solved it, must be some cached issue. Maven and/or Netbeans are not cleaning well before a redeploy