I'm having the common media upload problem where images will fail uploading and send the error. However, this problem seems to have popped up with a change I've made recently because my WordPress site had been running for a few weeks and had no previous trouble with uploading media. It just recently acted up on me and sent me these error messages:
Warning: File upload error - unable to create a temporary file in Unknown on line 0
Warning: Cannot modify header information - headers already sent in /MYPATH/wp-admin/async-upload.php on line 26
“test-image.jpg” has failed to upload due to an error
Missing a temporary folder.
I've made sure that my wp_config file didn't get any blank spaces appended to it, checked my "uploads" folder and set permissions to 777 and also checked the file "async-upload.php" and line 26 had this line: header('Content-Type: text/plain; charset=' . get_option('blog_charset'));
I'm a bit confused on why all media uploading was fine and randomly started pushing this error. Is this something that may fall back on my host?