Failure Update OJS Serie 3.0.xx to 3.1.1.4

i have update ojs 3.0.4 to 3.1.xx not success and in monitor display "There are no readable files in this directory tree. Are safe mode or open_basedir active?"
So what the best solution ?

Hi @Ariev_Archerys,

Please see OJS Upgrade failed 2.4.8-1 to 3.0.0 - #10 by tiyok.

Best,
Amanda Stevens
Public Knowledge Project Team