@Suvendu_plb
Hi,
Please confirm the following information for the reported phenomenon.
1. What's your camera's firmware and hardware version?
2. What's the model number and capacity of your SD card? Please follow the instructions below to test your SD card, and send us a screenshot of the test results.
How to Verify Fake Micro SD Cards
3. Please go to the camera's Device Settings > Storage & Recording > Local Storage page and send us a screenshot of it.
4. Do you have another SD card? If so, please insert it into the camera and check if the same phenomenon occurs.
Best Regards