java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at com.pslcl.dtf.core.Core.check(Core.java:2279)
at com.pslcl.dtf.core.Core.syncDescribedTemplates(Core.java:2336)
at com.pslcl.dtf.core.generator.Generator.sync(Generator.java:386)
at com.pslcl.dtf.core.generator.Generator.close(Generator.java:441)
at com.pslcl.dtf.core.generator.Generator.completeTest(Generator.java:357)
at org.opendof.test.generator.oal.OperationsTestGenerator.main(Unknown Source)

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