I found the reason, the problem isn't from Moodle, but from server who hoted it, as follow:
the folder moodledata need Rese Owner from the DirectAdmin of the server several times, and every thing come ok.
I found the reason, the problem isn't from Moodle, but from server who hoted it, as follow:
the folder moodledata need Rese Owner from the DirectAdmin of the server several times, and every thing come ok.