java.util.NoSuchElementException: key not found: @library @isabelle.typ def get$4[T$423](thiss$108 : Option$0[T$423]): T$423 = { require(thiss$108.isDefined$1) val Some$0(x$244) = thiss$108 x$244 }

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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 GitHub by BLepers
, 1 year ago
key not found: @library @isabelle.typ def get$4[T$423](thiss$108 : Option$0[T$423]): T$423 = { require(thiss$108.isDefined$1) val Some$0(x$244) = thiss$108 x$244 }
via bcomposes.com by Unknown author, 11 months ago
via dzone.com by Unknown author, 2 years ago
key not found: bird
java.util.NoSuchElementException: key not found: @library @isabelle.typ def get$4[T$423](thiss$108 : Option$0[T$423]): T$423 = { require(thiss$108.isDefined$1) val Some$0(x$244) = thiss$108 x$244 }

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