Incorrectly formatted error message.

[nxtman123]

The error message generated here is incorrect. It should be only_type._meta.name instead of graphene_type._meta.name. This way the expected value will be reported, which is what the message says it is.

graphene/graphene/relay/node.py

Line 105 in 7bd77a0

).format(graphene_type._meta.name)

Also, it's better to use "a" instead of "an" as a default preposition in messages.

graphene/graphene/relay/node.py

Line 104 in 7bd77a0

'Must receive an {} id.'