Error in Submission page

Hello everyone!

I’ve updated my journal from version 2.X to 3.1.2.
Now, almost finishing the update procedure, I found an error.

In the first submission page, the Section dropdown selector is not visible/is broken.

In the error.log I’m getting the message:
PHP Warning: Declaration of SubmissionSubmitStep1Form::fetch($request) should be compatible with PKPSubmissionSubmitStep1Form::fetch($request, $template = NULL, $display = false) in /var/www/html/ojs/classes/submission/form/ on line 18

Someone can help me?

screenshot from the page: