It is a fresh install of ovirt-engine 4.4 running a fresh Centos Stream 8 VM. The problem is that the GUI isn't working I'm getting the following error: "500 - Internal Server Error" I already tried to downgrade postgresql-jdbc from version 42.2.14 to version 42.2.3 but it didn't change anything (after a "systemctl restart ovirt-engine" of course). I found an error in the "ovirt-engine.log" file, I pasted the content here: https://pastebin.pl/view/576d3a33 I don't know if it is related or not.

I downgraded postgresql-jdbc package: [root@ovirt-engine01 ~]# dnf info postgresql-jdbc Last metadata expiration check: 1:52:47 ago on Mon 09 May 2022 06:40:26 AM EDT. Installed Packages Name : postgresql-jdbc Version : 42.2.3 Release : 3.el8_2 Architecture : noarch Size : 752 k Source : postgresql-jdbc-42.2.3-3.el8_2.src.rpm Repository : @System From repo : @commandline Summary : JDBC driver for PostgreSQL URL : http://jdbc.postgresql.org/ License : BSD Description : PostgreSQL is an advanced Object-Relational database management : system. The postgresql-jdbc package includes the .jar files needed for : Java programs to access a PostgreSQL database. Available Packages Name : postgresql-jdbc Version : 42.2.14 Release : 1.el8 Architecture : noarch Size : 753 k Source : postgresql-jdbc-42.2.14-1.el8.src.rpm Repository : appstream Summary : JDBC driver for PostgreSQL URL : http://jdbc.postgresql.org/ License : BSD Description : PostgreSQL is an advanced Object-Relational database management : system. The postgresql-jdbc package includes the .jar files needed for : Java programs to access a PostgreSQL database. Then I did a "systemctl restart ovirt-engine" but I still getting the same error that I uploaded in pastebin before.