(12:33:58) | Error while compiling BetterLoot: No data contained in .cs file

(12:33:59) | Error while compiling BetterLoot: Identifier expected | Line: 792, Pos: 88

it tells you where the error is in the data file, check it through a json validator

disable the pluginwatchers oxide setting, upload it again and load the plugin manaully with o.load BetterLoot