AWS EC2 - No Space Left on Device

You have exhausted all of the inodes available on your filesystem. You likely have a directory somewhere with a metric crap-ton of tiny files. You'll need to locate that directory and remove some of the files.

To search which folder of your server is eating the inode limit, you can run this command:

find . -xdev -type f | cut -d "/" -f 2 | sort | uniq -c | sort -nr

Command taken from here