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Zephyr RTOS Blinky Project not working in RED-V REDBOARD

I’m using RED-V REDBOARD and was trying to run Zephyr Blinky code using Platform IO IDE. But it was not working. The build and upload is showing success, but the led blink is not working. Took the example from this link given platform-sifive/examples/zephyr-blink at master · platformio/platform-sifive · GitHub
Please help me to resolve this issue. Thank you.