Error Code -5 and -7 are internal error codes to SnowRunner itself and not a mod.io related error. These usually appear when a mod or several mods have been installed that is not compatible with the game or have some kind of issue or error.
Subscribing to mods that require manual installation, are not valid or broken mods, or mods for an older version of the game, may cause this issue, and you should unsubscribe from these mods. If you're unsure which mod may cause the error, you should unsubscribe from all mods, then resubscribe one by one.