help dong gan login wp admin kok error?

agan2 yang bs bantu ane.....
blog aku kok kl login wp admin hasilnya spt ini ya?

Warning: require_once(./admin.php) [function.require-once]: failed to open stream: No such file or directory in /home/cellph11/public_html/wp-admin/index.php on line 12

Fatal error: require_once() [function.require]: Failed opening required './admin.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/cellph11/public_html/wp-admin/index.php on line 12


pdhl kl dibuka blognya bs...
cuma setiap login wp admin spt itu keterangannya

mohon bantuan agan2 semuanya

 

Coba pake theme default gan