That /var/folders file path is to a file on your system, and is not remotely accessible.
The following image shows the reply box with the photo insertion button circled in red.
![](https://discussions.apple.com/content/attachment/4ef2984f-8afa-4b9e-814b-6da0b3dae3e9)
To use that, take a screen shot, confirm the image shows no sensitive information, and upload it here.
To learn how to take a screen shot, click or tap on the following blue-text link > Take a screenshot on your Mac - Apple Support
As for the original question, the "This password has appeared in a data breach" messages can be generated by macOS, and can indicate a password that is, well, compromised. Re-using passwords can be a serious problem in recent years, as passwords become known when services are breached, and the account and its known passwords is then tried, well, everywhere.