TL/DR
I've removed whole /home/user/.cache/JetBrain
s folder.
Explanation
I've resolved my problem by checking logs:
#c.i.i.StartupUtil - JVM options: [-Djava.home=/home/user/.cache/JetBrains/RemoteDev-IU/...
Line 86164: 2022-04-25 09:40:57,760 [ 288] INFO - STDOUT - This
IDE build has expired. Please download a new build from JetBrains
official site
Since it was remote project on my Ubuntu 20.04 virtual machine.
I've removed whole /home/user/.cache/JetBrain
s folder.
Next time I started my remote project from JetBrains Gateway it downloaded client and other missing files automatically on my Ubuntu machine and then everything worked.
For some reason IDE on Ubuntu side didn't get updated when opening remote project on Ubuntu.