gpe和graph的status为什么会get不到

[zbw]

(‘Failed to get Status(gpe). Please try again. Exception:’, “cannot concatenate ‘str’ and ‘NoneType’ objects”)

(‘Failed to get Status(graph). Please try again. Exception:’, “cannot concatenate ‘str’ and ‘NoneType’ objects”)

[xuanlei.lin]

请问您做过什么样的操作，才报的这个错？