Resolving errors in java applicatio​n(using google app engine)

[dolly]

Hi All,

I am a student and have created an application in JAVA using google
app engine.

I am getting an error:
Class model for query has not been resolved. Check the query and any
imports specification
org.datanucleus.exceptions.ClassNotResolvedException:

 

Here model is a JAVA class which has the variables defined this query is refering to.

Can anyone help me with this?

 

Thanks