STM32H7 with LL HAL freeRTOS not running

[aggarg (Gaurav Aggarwal)]

@anks146

 /* CRITICAL FIX: These MUST be commented out when using custom tick source (TIM7)
    Uncomment ONLY if using SysTick for FreeRTOS tick */
 // #define vPortSVCHandler    SVC_Handler
 // #define xPortPendSVHandler PendSV_Handler
 // #define xPortSysTickHandler SysTick_Handle

As @hs2 already pointed out, you likely need SVC and PendSV handler. Please uncomment these lines and see if it works.