Robo 3t reported an error when deleting mongodb collection

  mongodb, question

As follows, when I enter a command to delete data with id=5b4c5ac63ce96b02e39b0c08 in robo 3t, I report an error. how do I solve it?

db.getCollection('user').deleteOne({"_id" : ObjectId("5b4c5ac63ce96b02e39b0c08")})

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Solution:
Do not use the secondary connection address, use the primary connection address to operate