H755 Hard reset no error and soft reset in debug mode has error

[trieunguyen]

I create project with CubeMX, use Keil MDK IDE, CM7 core without user code , CM4 core has simple user code. Download code to both CM7 and CM4 then code runs correctly. Then switch to debug mode for CM4. Now, if i press Reset button on board or press Run/Stop icon on IDE then CPU runs normally, if i press Reset icon on IDE then if i press Run then will get error like this:

Did I configure CubeMX wrong somewhere?