Can't open the file class from jump to declaration with ctrl + left-click

After I update IntelliJ to the new version 2021.2.3" ( Build #IU-212.5457.46 )
Then I can't use function jump to declaration with ctrl + left-click like before updating (open the file class). I try many ways to fix it but still can't.

For example, I need to open the class from the function jump to the declaration.
Example Code: ClassA a = new ClassA(); (Found only message with all of them: "Cannot find declaration to go to")

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And another the function call method under Java class ( CTRL + SPACEBAR )

For example, I need to open the class from the function jump to the declaration.
Example Code: ClassA a = new ClassA();
                          Type "a." (then hold ctrl + spacebar found only new() choice)


Thanks for everybody answering me or try to help me fix it.