Wizard problem at step 4

[gddblo]

Describe the bug
The setup wizard procedure stops at step 4 and does not proceed towards the request for the first access credentials.

To Reproduce
Steps to reproduce the behavior:

1. .../paperwork/frontend/public
2. Click on "NEXT"
3. verify the dependence if ok (and it's ok)
4. Click on "NEXT"
5. MySQL login credentials are required; input them and Click "Check Credentials";
6. click on "NEXT"
7. The "Customized ypur paperwork" page: there is no need to change anything
8. Click on "NEXT"
9. nothing happens

Expected behavior
the wizard should ask for the first credentials but the page does not appear and therefore it is impossible to proceed and complete the setup

Desktop (please complete the following information):

• OS: Windows 10
• Browser chrome, firefox, edge

Additional context
We tried to change the counter in the file / app / storage / config / setup by inserting the number "5" or the number "6" instead of "4" but there is no effect. If you enter the "7" the next page "login" does not work (blank page)