The site started with ASP so we had the Window server. After the WordPress site started I noticed some sluggishness and then had permission errors when we tried to upload image files. Godaddy support recommended server switch to Linux, and they did. I didn't have to do anything. But now on the footer area, the errors show. See the errors at the bottom in double quotes.
When contacted back, Godaddy told me to upgrade the WP, so I did yesterday but still showing the same errors on every page. They told me to give time till Sunday. I don't see why and bet it will persist.
I have no clue how to go about. "Line 0"? Anybody has any suggestion? What file even should I look into not that I can understand enough to fix it probably?
I backed up the database before the upgrade but not before the server switch. Do I need to uninstall and reinstall everything? If so, which stage database should I use? I'm not sure if Godaddy made a back-up before the server swap.
Thank you in advance for any help I get.
"Warning: Unknown: open(/var/chroot/home/content/21/8160721/tmp/sess_6ptnp309n8vl93jm96f5hcf163, O_RDWR) failed: No such file or directory (2) in Unknown on line 0"
"Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct () in Unknown on line 0"