Magnolia 6.0 reached end of life on June 26, 2019. This branch is no longer supported, see End-of-life policy.
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This can be due to changes in signatures of classes that are stored in user sessions, such as permissions, user, etc. The error happens when Tomcat attempts to de-serialize serialized sessions as the container starts. The de-serialization causes the loss of persisted sessions. Users will have to log in again. Otherwise it is a harmless error and can be ignored.
If you see the following error message in your logs:
Code Block |
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javax.xml.transform.TransformerFactoryConfigurationError:
Provider org.apache.xalan.processor.TransformerFactoryImpl not found
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Add the Xalan jar to the WEB-INF/lib
folder of your Magnolia instances, delete the repositories and start again. Please see MAGNOLIA-1958 for more details and comment on your own experience.
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