I'm using the Illustratr theme. On the home page of my blog it says:
"NOTHING FOUND. It seems we can’t find what you’re looking for. Perhaps searching can help.",
This appears since I created it. It only shows on that first page, which is static, and where I have only a gallery. Also when I post other content on that page, it stays there. I don't know much about the coding, so changing the template is not really an option...