System Workbench for STM32

Application stops after reset

Hi everyone,
I have created a custom board with STM32L072CZ and trying to flash through UART which is successful as I can see my application LED blinking immediately but as soon as I reset it our power off and turn it on again, the application LED stops to work but when I check in the memory using the flash software, I see all the memory bits intact.

Please help.