Can't change file permission

[jibon57]

I can't change file permission from my cpanel it show this error: "FileOp Failure on: /home/jibon57/public_html/tmp: Read-only file system". But I need to change the file permission to 777. Please help me.

[calistoy]

Changing it to 777 will cause an internal server error. Files should be 644 and folders 755 in order for it to work correctly in your free hosting account.