I created an user interface with a form to get information from user. When I submit the form, it prints the following warning in the server log:
INFO: WARNING: FacesMessage(s) have been enqueued, but may not have been displayed.
sourceId=j_idt7:j_idt11[severity=(ERROR 2), summary=(j_idt7:j_idt11: Validation Error: Value is not valid), detail=(j_idt7:j_idt11: Validation Error: Value is not valid)]
I tried to solve it, however I didn't understand how. How is this problem caused and how can I solve it?