Got this in red first time seeing:
ErrorBlockTrigger.Refresh: Chunk null. ChunkKey=419430312, LocalChunkPos=2, 52, 4, PrefabInstance=rwg_tile_gateway_intersection2.1007. From: UnityEngine.StackTraceUtility:ExtractStackTrace () BlockTrigger:Refresh (FastTags`1<TagGroup/Global>)...