I apologize for the inconvenience. I have shared this issue further to our team, since this particular error prompt is quite uncommon and is somehow related to the Steam Application or perhaps from a game that you have installed.
Before sending your logs, please check the following:
Did you put D5 Render in Steam?
Please check if you have installed cracked games (UE-based), we recommend uninstalling them.
Indeed! I deleted a game that was linked to Steam, and D5 started working normally.
It seems there was a conflict with some files!
Thank you very much for your response; I had been struggling with this issue for quite a while.