I have never heard of attendancechart.
I check for permissions on a Linux server by using my FTP client. Usually if you right click, there is a selection for properties or something and it will tell you your settings. They may be expressed with three groups of letters or some numbers. See what they are on a module that works and then try to apply the same rights to the attendance folder/files.
On windows, you should be able to log into the server with remote desktop or something and right click the file/folder. If you need to, uncheck the "read only" box. Maybe that will do it!
Checking for permissions
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