If I try to load the files from the front end from this error:
Saving failed with the following error: 'accessToken' invalid: can not be null
Even when I try to upload back-end files such as category or document icons.
I think it is related to the permissions of the edocman directory on the server, but I do not understand what to give because error on all 744 - 755 - 777 (which is better not to give, but i did a test

).
If I upload fil ftp and then link them back-end it works, but I can not upload files this way.
Do you help me? Thank you.