Me and my friend decided to rent a Factorio server from a hosting company since we figured both the cost and time we'd spend on technical issues would be lower - but we've run into an issue which to me seems to be related to permissions on the actual server and not the game itself. But the admins for the hosting company seem unable to resolve the issue and I came here to ask for advice.
The issue is easiest to reproduce if we both leave the server (so that no one is online) and later rejoin, the server tries to jump back to autosave1 (from whatever previous number iteration it had) which makes the server spit out an error (below) that indicates that the server is uanble to overwrite both the autosave and the player-data backup and temp files and crashes because of it.
Today we have to resolve this everytime we want to play (which is all the time

We're running 0.17.x Latest Experimental currently at .54 but this happened in .53 as well and no mods.
To me this sounds like a permissions issue on the server but I wanted to get a second opinion before I go back to the hosting admins. The log file at the time of the crash is attached to this post. Tell me if you need more information or anything, any help is greatly appreciated.
This is our save file if needed:
https://drive.google.com/file/d/1Xbq026 ... sp=sharing
Best regards,
Helio