SVN forbidden by the server issue

I am getting below error while I am committing in SVN.

foysal@laptop:~/Videos/osmall/trunk$ svn commit -m "fixed form submission"
Sending        app/Http/Controllers/DebitNoteController.php
Sending        app/Http/Controllers/SellerHelpController.php
Sending        config/database.php
Sending        resources/views/debitnote/debitnote_view.blade.php
Sending        resources/views/jaguar/jaguar.blade.php
Sending        resources/views/seller/debtor_ageing.blade.php
Sending        resources/views/seller/members.blade.php
Transmitting file data ...svn: E195023: Commit failed (details follow):
svn: E195023: Changing file '/home/foysal/Videos/osmall/trunk/config/database.php' is forbidden by the server
svn: E175013: Access to '/repos/osmall/!svn/txr/10920-90t/trunk/config/database.php' forbidden

via Chebli Mohamed