Accidentally, I deleted libapache-mod-tile, related configuration files and some other important libraries again. Everything stopped working and at this time I literally cried. Now, I’m feeling better and will start everything again. It’s OK. I can solve each and every issue. But this will consume a lot of my time. It’s quite funny that when I’m interested to work, these type of things are happening. Already late and now this. Second, it’s better to solve my errors by own. Even when I discuss my problem, people think I’m seeking for their help. Better to avoid this as much as possible. Self learning is a better way, I think.