Hi,
This forum is for technical support on Blizzard’s Classic Games — legacy games such as Diablo II (2000).
Blizzard’s support on Activision games is limited to installation and patching; for support with in-game issues, you need to contact Activision Support.
Some links:
- Scope of Blizzard support for Activision games: Having Problems with Call of Duty? Read this first!
- Activision Support: Call of Duty: Black Ops 4 | Activision Support
- Support options @ Activision: Support Options | Activision Support
You may also want to check Reddit; there might be some info on that particular error.
Good luck in your games !