Ensure your Luma3DS firmware is updated to the latest version by holding the 'Select' button while booting the console. If you are on an old version, update your boot.firm file on the root of your SD card.
If you are seeing the message "Failed to install CIA file. Result code: 0xd8e0806a," follow this guide to troubleshoot and resolve the issue. What Causes Error 0xd8e0806a? failed to install cia file 0xd8e0806a updated
If you are transferring the file via a microSD adapter, ensure the adapter isn't faulty. Ensure your Luma3DS firmware is updated to the
Database Errors: The 3DS "Title Database" is cluttered or corrupted. failed to install cia file 0xd8e0806a updated