Hundreds of websites made using a popular web development tool have exposed sensitive data to anyone with a web browser. The tool, a PHP framework called Laravel, includes a debug mode that lets developers identify errors and misconfigurations before websites go live. Donald Trumps campaign website contained a mail server configuration exposed in plain text, visible from any web browser through the Laravel debug interface. The potential consequences of such an exposure are quite serious; Trump’s campaign website is used to solicit donations, after all.”]
Source: https://www.comparitech.com/blog/vpn-privacy/debug-mode-exposes-credentials/