EXT4-fs (mmcblk1p1): unable to read superblock

This error message indicates that the file system on the specified partition (mmcblk1p1) could not be mounted because the superblock, which contains important information about the file system (such as the size, location and status of files), could not be read.

Possible causes for this error include:

1. Physical damage to the storage device
2. Corruption of the file system due to software or hardware issues
3. Incorrect partition table settings
4. Improper shutdown of the system or abrupt removal of the storage device

To fix this error, you can try the following steps:

1. Check the physical condition of the storage device and replace it if it is damaged.
2. Run a file system repair tool such as fsck to fix any corruption in the file system.
3. Check the partition table settings to ensure that the partition is correctly identified and mapped.
4. Avoid improper shutdowns and ensure that the storage device is properly ejected before removal.