The "indexof/gmailpasswordtxt" link appears to be a directory index that points to a text file containing Gmail passwords. The "indexof" part of the link suggests that it's a directory listing, which is a feature commonly used by web servers to display a list of files in a directory when there is no default file (e.g., index.html) present.
If you own a website, use a tool like wget --spider to recursively list all files in your public HTML folder. indexofgmailpasswordtxt link
If you want one of these expanded (legal steps to report, safe recovery steps, how to secure accounts, or how directory listings occur), tell me which and I’ll provide a focused, detailed guide. safe recovery steps
If you want, I can: