Problems with something? Here's where you might find some answers!
Looks like you're missing some Puppeteer dependencies! See this Medium article for a solution
Noted in this issue, you're going to need to set your Chromium path manually. To do so, set a custom_chromium_exec in your config.json.
This is unfortunately a common problem and a limitation of web scraping. 99% of the time something like this happens, it means the bot is temporarily flagged, and Amazon is returning a Captcha instead of the item or page you're trying to get.
If you're a bit tech-savvy and want to see if this is the case, use curl or something similar to output the HTML for the item or page you're trying to view.
The best solution to this problem? Wait (or use a proxylist). Take the bot down for a few minutes, increase the time between price checks, and try again.