无法将上传的文件移动到目标Drupal 8

Question

I have a trouble gatting drupal to upload files (images, configuration, I guess anything). The error message is:

The file could not be saved because the upload did not complete.
File upload error. Could not move uploaded file.

When I go to log it says:

Upload error. Could not move uploaded file multimedia.svg to destination public://2017-03/multimedia.svg.

I already read about permissions and here they are:

sites/default/files - 770
sites/default/files/2017-03 - 770
/tmp - 1777

However I'm able to upload & install themes and modules without any ploblems at all. So what could it be? And how do I fix this?

Answer 1

1. switch php mode from "Apache module (mod_php)" to "Fast CGI (mod_fcgid)"
2. core\\includes\\file.inc function file_prepare_directory() should return true

see this patch or just temporarily put

return true;

instead of

return $writable;

in the function