Can't create Ac6 Debug Configuration to CubeMX project
Dear Shuji_Mikami,
I faced the same error, but Kevin proposed to right-click on your project and select “Debug As” in the roll-down menu (as shown in the attached snapshot)
Sorry for asking you to check it again : please, may you confirm that there is no “Ac6 STM32 C/C++ Application” option for you after “Debug As”?