How can I fix the "Could not delete temporary file"? I'm getting below error when run cron:


  The specified file could not be deleted, because it is not a valid URI. More information is available in the system log.


Due to TMP files, my site will be crashed, again we will restored site and unable to clean TMP files in my live site.
Change to another tmp folder destination? Configuration -> file system

I not sure will this help you.