fixed error details showing up as [object Object]

src/matrix/matrix-command-handler.js

@@ -352,7 +352,7 @@ const commands = [{
 						msgtype: "m.text",
 						body: "Unknown error occurred during thread creation. See error message below (or on the main channel, if the command was ran inside a thread) for details."
 					})
-					throw e;
+					throw e_raw;
 				}
 			}
 		}