A stack trace without source maps can be frustratingly difficult to decipher, but Sentry's ability to display original source code in stack traces can greatly improve debugging efficiency. To troubleshoot source map upload errors, it is essential to upgrade to the latest JavaScript SDK version and ensure that Debug IDs are being injected into the event payload. Additionally, verifying the source maps wizard configuration and checking for Debug ID injection tool capabilities can help resolve issues. If using release + abs_path, ensuring that the release and dist values match what was uploaded and verifying the file paths in the stack trace against the uploaded source map paths can also fix errors. Furthermore, Sentry recommends using Debug IDs for an easier setup process, as they uniquely identify and bind pairs of minified sources and source maps with a unique ID, allowing for more accurate mapping and debugging.