Linux Mint can't mount image made with dd

[nelstomlinson]

I made an image of the eMMC using sudo bs=1M status=progress dd if=/dev/sdc of=~/20211111.img, then tried to mount it using the Disk Image Mounter. It fails, and dmesg shows:

Code:

[396068.295855]  loop2: p1 p2
[396068.475872] EXT4-fs (loop2p1): INFO: recovery required on readonly filesystem
[396068.475873] EXT4-fs (loop2p1): write access unavailable, cannot proceed (try mounting with noload)
[396068.483157] F2FS-fs (loop2p2): Need to recover fsync data, but write access unavailable

It will mount images I have downloaded, but will not mount any that I have made with dd.

Any ideas what's up with that?