Object reference not set to an instance of an object.

at (Object )
at stqd0F4JkU44oQl9Fok.mkVM3APUbH(Object , stqd0F4JkU44oQl9Fok )
at MT4APIGD.MainWindow.MnBldMP0E2()
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()