Hi I am trying to run grails on google app engine using JDO, but I got this:
org.codehaus.groovy.runtime.InvokerInvocationException: javax.jdo.JDOFatalUserException: No meta data for Book. Perhaps you need to run the enhancer on this class? NestedThrowables: org.datanucleus.exceptions.NucleusUserException: No meta data for Book. Perhaps you need to run the enhancer on this class? I am confused, because when I did "grails app-engine package" it looks like the DataNucleus enhancer was running. How can I fix this? Thanks
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