Error “Client wants topic A to have B, but our version has C. Dropping connection.“

  出现这个问题可能有如下两个原因(我是因为第二个~):

  1)发布者,订阅者话题类型不一致
  2)发布者或订阅者之一话题名少加了/导致不一致

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转载自blog.csdn.net/gls_nuaa/article/details/131386627