It's a programming term. The error appears under addon_avatar.php. There is a block of code which is responsible for uploading a file.
/* upload avatar - step 2 */
You need to put in the code something like
echo 1; exit;
then upload the file again and again until you see the breaking point at some step.
In general, such error will appear when $warn=1;
So there is quite a lot of cases when it happens, you need to know which exactly.Possible reasons:
- the file was not uploaded at all. It may happen because on the server, a temporary upload folder is set up incorrectly. If other applications can't upload the file, this could be the reason.
- uploaded file doesn't match the allowed file type (specified under $availableTypes), so it may be not 'gif', 'jpeg', 'jpg', 'png'.
- the file exceeds the maximum size set under $maxFileSize
- file dimensions exceed
$maxAvatarWidth and/or $maxAvatarHeight, or if $staticAvatarSize is set to TRUE, they are not equal
to such settings.