INTERNAL ERROR (JAVA.LANG.REFLECT.INACCESSIBLEOBJECTEXCEPTION): UNABLE TO MAKE PROTECTED VOID JAVA.UTIL.RESOURCEBUNDLE.SETPARENT(JAVA.UTIL.RESOURCEBUNDLE)

This article records that after using java17 on my computer, the bug reported by the idea startup project.. is the above bug, the solution

Then add the following parameters to the idea startup class

--add-opens java.base/java.lang=ALL-UNNAMED