"Break at address "0xa05f0000" with no debug information available, or outside of program code while debugging codes" problem

Not much info to go off of here. Use standard debugging.

Is it in a hard fault? Examine SCB registers to determine why.

Step through your program to see where it occurs and find where/why it occurs.

Need to debug it earlier, uncheck "run to main()" type options and walk the code in from the Reset_Handler.

For custom board check a) that BOOT0 is pulled low, b) that the VCAP pin(s) are at 1.20-1.25V, and the capacitors are properly placed.

The NUCLEO board will have an 8 MHz HSE clock source, custom boards will have whatever you built them with

@Community member​ Thank you so much for responding.

I solved problem by changing resistor which is connected to BOOT0 thanks.

I was getting the same error using the STM32H747XI_discovery board with the sample LED light tutorial. Setting up the debug configuration exactly as they did in the videos. The one item that I did change to get it to work was to not download the symbols for the CM4 inside the CM7 debug configuration. Then allow the CM4 debug configuration to download the symbols when launching its debug configuration. Hope that might help someone.