[SOLVED] I can't open my airline website

Last night everything was fine. This morning i get this

Notice: The template file "/home/pilotomeraslan/public_html/a//lib/skins/CURRENT_SKIN/header.php" doesn't exist in /home/pilotomeraslan/public_html/a/core/classes/TemplateSet.class.php on line 231
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Newest Pilots
Warning: Invalid argument supplied for foreach() in /home/pilotomeraslan/public_html/a/core/templates/frontpage_recentpilots.php on line 3
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There have been 0 user(s), and 24 guest(s) online in the past 5 minutes.
Notice: The template file "/home/pilotomeraslan/public_html/a//lib/skins/CURRENT_SKIN/footer.php" doesn't exist in /home/pilotomeraslan/public_html/a/core/classes/TemplateSet.class.php on line 231

Please help.

It seems to me like a database connection problem. Did the database exists? Is the database user and its password valid? Does the database user have permissions for your systems database?

Database exist user and password valid all the permissions available. But i can not rich my website my friend.

What is your website url? It is probably a database connection issue.

http://a.aalvirtual.com

Did you change the database prefix? Are you able to access the admin center? http://a.aalvirtual.com/admin

when i go to admin center it says please login first. I dın’t know what is database prefix… Last night all was fine, now like this.

Can you tell me how to check database prefix?

In database some tables says in use http://prntscr.com/b5hhl0 i have never seen this? Is this the reason?

website is ok now. I didn’t do nothing. I reload database couple times and it start to work.

I would check your database with your host as this is a server issue locking up of tables.

Now seems ok. Should i do something else?

I have some topics and i want to add solved to them. How can i do that in forum?