Security issues on Blogger pages

I have a personal site. It is connected to my Blogger blog. Of late, I have seen Google flagging it as an unsafe site. When I used Google Search Console, it has shown errors saying that "Google has detected harmful content on some of your site’s pages. We recommend that you remove it as soon as possible. Until then, browsers such as Google Chrome will display a warning when users visit or download certain files from your site."

I need these cleared up.