VSCode, fails to debug

Advanced Solutions Debugging
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2

Update:

Updated the platformio.ini file:

[env:uno]
platform = atmelavr
board = uno
framework = arduino

debug_tool = avr-stub
debug_port = COM5

; GDB stub implementation
lib_deps =
    jdolinay/avr-debugger @ ~1.4

Now, while trying to debug the following error appears:

HardwareSerial0.cpp.o (symbol from plugin): In function `Serial':
(.text+0x0): multiple definition of `__vector_18'
avr8-stub.c.o (symbol from plugin):(.text+0x0): first defined here
collect2.exe: error: ld returned 1 exit status
*** [.pio\build\uno\firmware.elf] Error 1

I believe I have added everything I do need in the sketch:

#include <Arduino.h>
#include "avr8-stub.h"

uint8_t button = 8;
uint8_t redLed = 10;
uint8_t buttonWasPressed;

void setup() {
  debug_init();
  pinMode(button, INPUT);
  pinMode(redLed, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  while(1) {
    if(digitalRead(button) == LOW) {
      if(buttonWasPressed == 0) {
        digitalWrite(redLed, HIGH);
        buttonWasPressed = 1;
      }
    }
    else {
      digitalWrite(redLed, LOW);
      buttonWasPressed = 0;
    }
  }
}