I tested it multiple ways.
seeing you posted several support request for different plugins on startup
if 1 harmony patch was unsuccesfull it will stop every harmony patching from happening so failing on initialising on several plugins doing so.
Oxide.Plugins.JunkpileWaterSpawn_patch::TargetMethods() returned an unexpected result: some element was null)
at HarmonyLib.PatchClassProcessor.GetBulkMethods () [0x001e5] in <6c906b4f1de440f3a86cb0ebb3f48ea6>:0
at HarmonyLib.PatchClassProcessor.Patch () [0x00041] in <6c906b4f1de440f3a86cb0ebb3f48ea6>:0
#region HarmonyPatching
private Harmony harmony;
is the culprit