In myeclipse 8.5 environment inside start tomcate 6.0, suggesting the following error , how to solve :

java.lang.NoClassDefFoundError: org / apache / juli / logging / LogFactory
at org.apache.catalina.startup.Bootstrap. (Bootstrap.java: 54)
Caused by: java.lang.ClassNotFoundException: org.apache.juli.logging.LogFactory
at java.net.URLClassLoader $ 1.run (URLClassLoader.java: 200)
at java.security.AccessController.doPrivileged (Native Method)
at java.net.URLClassLoader.findClass (URLClassLoader.java: 188)
at java.lang.ClassLoader.loadClass (ClassLoader.java: 307)
at sun.misc.Launcher $ AppClassLoader.loadClass (Launcher.java: 301)
at java.lang.ClassLoader.loadClass (ClassLoader.java: 252)
at java.lang.ClassLoader.loadClassInternal (ClassLoader.java: 320)
... 1 more
Exception in thread "main"



------ Solution ------------------------------------ --------
try another version a little higher
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org / apache / juli / logging / LogFactory find a higher version of the log package to try
not find the tips are included in the category
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less logging jar package
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looking up ~ · ·