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1.An internal error occurred during: "Initializing Java Tooling". MyEclipse startup error
Workaround: MyEclipse ->windows -> Reset perspactive to reset the MyEclipse page. (The problem flashed for a while, but there was no error. After using the method, I don't know if the solution did not solve the actual problem)
2. The most serious problem is that Tomcat can't open the web page for some reason. It can open other projects from time to time.
to be solved
3.