Can not debug embedded application

I tried to debug the sample HelloWorld application again, but the Console view shows:

Couldn't bind gdb to socket on port 3333: Address already in use

How do I fix this issue?


See Common issues and Solutions ( Version 1.0 22/8/22 ) point 1.4

Extract from this document :

Explanation: The RISC-V core for the previous debug session was not cleaned up.
Solution: Reset RISC-V core by pressing reset button on the FPGA board. On DE2-115, it’s
button KEY0