Path Collision trying to Export Collection

I think issue in compass filter export ,

For Example
{
“user”: {
“name”: “bbb”,
“firstname”: “a”
}
“email”: “test@test.com
}

if we are filter with “user.name” : “test” after that export its through the error, once you got error

  1. Go back to select fields un check “user.name”, “user.firstName” fields, after that add the “user” filed manually after that try to export its working
    }

Thanks Arthur_Chan from your comments