The server refuses to come up with the mod installed, we had it working for awhile but I have had to remove it as it is causing the server to get stuck in like a crashing loop.

The server is working perfectly fine with the mod removed

We did try removing it, restarting the server. Then readding the mod again to reinstall it, causes the same error however

LowLevelFatalError [File:F:\build\LostIsland\Engine\Source\Runtime\Core\Private\HAL\FileManagerGeneric.cpp] [Line: 649]
Invalid BufferCount=0 while reading ../../../ShooterGame/Content/Mods/1814953878/Common/Materials/Coal/MI_Forge.uasset. Pos=264848, Size=262144, PrecacheSize=2147483647, PrecacheOffset=264848