When using the Sentry JavaScript SDK, the source code and source maps are automatically fetched by scraping the URLs within the stack trace. The ability to disable this feature on a project-by-project basis has been made available in Organization Settings, allowing users to control it organization-wide. To toggle this setting, users can locate Security & Privacy in Organization Settings and turn off Allow JavaScript source fetching, which will prompt for confirmation as turning off this feature impacts Sentry's aggregation of issues if source maps are not already uploaded as artifacts. Disabling this feature is recommended due to potential inconsistencies, unreliability, and security concerns, such as exposing sensitive URLs or encountering errors during crawling, and users are encouraged to use the release artifacts API and upload source maps instead.