[rules-users] Drools 5.5 java.lang.ClassCastException: org.drools.compiler.rule.builder.dialect.mvel.MVELDialectConfiguration cannot be cast to org.drools.compiler.DialectConfiguration

[marianbuenosayres]

I had a similar problem once related to having two sets of drools
dependencies in the classpath. Have you tried removing the
org.apache.servicemix.bundles.drools dependency from your pom file? if this
is a servicemix Service and you can't remove that from the actual runtim
e, you might try a PARENT_LAST class loader configuration



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