Object reference not set to an instance of an object.

at (Object )
at RKvTf6D75pWUbgelu7e.ibADa6vqHF(Object , RKvTf6D75pWUbgelu7e )
at MT4APIGD.MainWindow.z2UrSLj3bP()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()