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  1. ,

    Check if the field you try to read really exists in the database. If it is optional, just use com.mongodb.casbah.commons.MongoDBObject#getAs

Solutions on the web

via Google Groups by Anthony Doan, 2 years ago
via GitHub by jrudolph
, 1 year ago
key not found: ../client-side/
via GitHub by fellipetenorio
, 1 month ago
key not found: new-reg
Empty query.