Data recovery from non-mounting ext4 USB stick

Job ID: 38542794

Budget: $30 – $250 USD

This job is ONLY for programmers based in Europe, USA/Canada, Russia, Japan/China, or Australia.

I have a USB stick formatted with ext4 that is no longer mounting on my Linux system:

"Error mounting /dev/xxx: can't read superblock on /dev/xxx"

Running "sudo mke2fs -n /dev/xxx" returns this: "The file /dev/xxx does not exist and no size was specified."

I need help in extracting files from it.
The files are mixed types - documents, photos, videos, etc.

Ideal Skills:
- Data recovery expertise
- Familiarity with ext4 file system
- Proficient in Linux
- Experience with physical USB stick recovery

https://www.google.com/search?q=%22can%27t+read+superblock%22+on+linux+%22ext4%22
Related categories: Linux Ubuntu