I was trying to flash my code into the STM32L0xx series controller, not a Evaluation board. When I did, it said the code has flashed that it was successfully done but when I disconnected the debugger ST-Link(GDB) and re-plug it to power the code did ...

Whenever I jump to .ioc or CubeMX perspective the software doesn't respond anymore. When I try to install newer of CubeIDE I could not install on macOS Catalina due to incompatibility issues.