Your PC is infected:
https://www.virustotal.com/en/file/05d4755659f58878e8a15c1dd311d6bbfc88d7fd7c66af50372f13695942f1be/analysis/1483895682/
Download and install Avast and do a full scan
Try this:
1. Remove C:\Program Files (x86)\Rockstar Games\GTA San Andreas\DINPUT8.DLL
2. Reinstall MTA from https://nightly.multitheftauto.com/?mtasa-1.5-latest
The error is possibly caused by one of the .dll files you have copied into the GTA directory.
Start with removing dxgi.dll, and if that doesn't help, try removing the other .dll files
Does the MTA Linux server have full internet access?
What server IP is shown in the server log:
Querying MTA master server... success! (Auto detected IP:?????)