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There should be some minor issue in persistence.xml file
Thanks & Regards,
The error indicates you have a version of TopLink Essentials on your classpath but that it cannot be used - likely because you have specified a particular JPA provider in your persistence.xml using the <provider> tag, and it is not available on the classpath. Try removing the tag if it doesn't matter which JPA provider is used, or add the one you need to the classpath.