Warning message on my blog

Hello!
Thank you very much for this wonderful theme!

I am enjoying using it, but I have a problem.
Each post on my blog has a warning message about your theme like below.

warning: printf() [function.printf]: too few arguments in /home/users/1/lolipop.jp-dp55064122/web/auringonnousu/wp-content/themes/something-fishy/content.php on line 41

[Please do not post in uppercase. It’s the electronic equivalent of shouting and is considered quite rude. Blockquote de-capped.]

I changed other themes and they didn’t have this warning message.

Could you please let me know how to delete this message?

Thank you very much.