Install stuck at 8%, setting default template

I'm installing Microweber on a Windows Server 2016 running IIS.

When I go to the new site, I get the questions about the database and username.

But when I click the INSTALL button, the progress bar goes to 8% and then appears to get stuck.  I have let it sit there for 30 minutes without any change.

I have PHP 7.2.7 and MySQL 8.0.12 installed.

I thought it may have been a permissions problem, so I gave IUSR full access to the directory and the DB user all permissions on the schema, but nothing seems to help.

Any ideas?

Thank you!