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Have you already resolved your concern? As suggested by your fellow member here, you should first try to insert the SD card on other devices, and should the other device failed to read the card, then the SD card is at fault. Also, try and insert other SD card to your device, and also check the settings with regards to other memory storage.
Hope this helps. Be sure to click " ✓ Accept as Solution" when you find an answer that works for you. Stay safe. 😀