I upgraded my development servier to Ubuntu 16.04.3 LTS.
Now when I try to upload a document to the FTP folder I get the message: "Could not upload 'basic.php to /var/www/html/MP2010-v2/classes"
Using FileZilla I can do the upload without problem.
My file permissions are -rw-rw-r-- william william
so, it should work if I am william.
I checked properties and I am logging in as william.