Where do i find inodes usage? disk space is fine, and i already done that permission changing through ftp earlier.From what I can gather from Googling that error message, this is a permissions issue (however, check your Disk Space Usage and inodes in cPanel to make sure those are not full). Here are my permissions that work:
public_html (755) -> wp_content (755) -> uploads (755) -> 2018 (755) -> 02 (755)
You can use the FileManger or a FTP client to change permissions.
See more at http://www.wpbeginner.com/wp-tutori...led-to-write-file-to-disk-error-in-wordpress/