liangjun-jiang commented on issue #4949:
URL: https://github.com/apache/skywalking/issues/4949#issuecomment-698070562
I totally believe you. but, if I don't comment out these two. I still saw
the error. I leave those to you to figure out why those matter.
```
# If true, SkyWalking agent will save all instrumented classes files in
`/debugging` folder.
# SkyWalking team may ask for these files in order to resolve compatible
problem.
agent.is_open_debugging_class = ${SW_AGENT_OPEN_DEBUG:true}
# The instrumented classes cache mode: MEMORY or FILE
# MEMORY: cache class bytes to memory, if instrumented classes is too many
or too large, it may take up more memory
# FILE: cache class bytes in `/class-cache` folder, automatically clean up
cached class files when the application exits
agent.class_cache_mode = ${SW_AGENT_CLASS_CACHE_MODE:MEMORY}
```
Likewise, I set the following as `true`, or I set it as `false`. Either
way, I won't see the error again.
```
agent.is_cache_enhanced_class = ${SW_AGENT_CACHE_CLASS:true}
```
I wish I could only need to care this, but it alone doesn't solve the problem
```
agent.is_cache_enhanced_class = ${SW_AGENT_CACHE_CLASS:true}
```
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