Cannot open version history due to a 409 (Conflict) error

[DiamondOra2 (ADOI)]

The title pretty much explains it all. For months now, I haven’t been able to do anything with my version history in my game, because every time I click on a place version I get this error:

Any help?

[q_ertyuiop1234567890 (A_HumanBeing)]

I’m getting this too, please help!