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  1. ,
    Expert tip

    Update Tomcat container adapters to 1.0.0.CR8 or further. If that doesn't work, 0D0A3C21 in ASCII is <!, first characters in a HTML file, so, check if you're not reading a different file or if there's an issue with your deserialization.

  2. ,
    Expert tip

    If you're using Liferay, check the steps in the last message on how to fix it:

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via Oracle Community by 3004, 1 year ago invalid stream header	at	at	at com.solarmetric.remote.TCPTransport$NoCloseObjectInputStream.(	at com.solarmetric.remote.TCPTransport$SocketChannel.getInput(	at com.solarmetric.remote.PoolingTransport$PoolChannel.getInput(	at com.solarmetric.remote.CommandIO.send(	at kodo.remote.ClientStoreManager.send(	at kodo.remote.ClientResultObjectProvider.send(	at kodo.remote.ClientResultObjectProvider.cacheResults(	at	at com.solarmetric.rop.EagerResultList.(	at kodo.jdbc.runtime.JDBCFetchConfigurationImpl.newResultList(	at kodo.runtime.CopyOnWriteFetchConfiguration.newResultList(	at kodo.query.AbstractQuery.executeWithMap(	at kodo.query.AbstractQuery.execute(	at	at	at	at	at	at	at	at