wu-sheng commented on issue #1080: Exception loading sessions from persistent 
storage
URL: 
https://github.com/apache/incubator-skywalking/issues/1080#issuecomment-381869627
 
 
   I think maybe some classes are enhanced by SkyWalking, so 
EnhanceRequireObjectCache was injected into the class skeleton by agent core 
and spring plugin. Which will cause this issue. 
   
   > because I can't assess the impact on other projects
   
   What do you mean by this? You can't change the config file?
   
   The key of this issue is to find out which classes are added into the Tomcat 
session. And are they enhanced by SkyWalking agent? such as: some cache client 
object? But from my understanding, we didn't intend to enhance any classes 
which may be added in to session. Only exception is only if Spring bean 
optional plugin is active, which you said you don't. So I guess, this is an 
error triggered by your application wrong usage of session.

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