Can't change to Cpanel rvskin2 theme to Default theme

I was working in my Cpanel,Accidentally I clicked and changed cPanel default theme to rvskin2, after that I can't open Dashboard it showing this errors. After that when i am log into Cpanel it always showing me error. I contact my hosting provider to change it back.

Please someone help me to fix. I realy need to access my Cpanel very quickly. Thank You