A configuration with this name already exists problem in Eclipse:
In Eclipse development, the project is renamed and the original backup project (the project name is exactly the same as the original project) is imported. At this time, when configuring remote debugging, a problem of "A configuration with this name already exists" is reported, but there is no configuration under "Remote Java Application".
Solution: Enter the workspace to delete .metadata/.plugins/org.eclipse.debug.core/.launches, and re-run Eclipse.
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