What we do is wrap mount/handle_* functions in undead which catches errors, logs them to Sentry, and shows the user an error page (if the error was on mount, to avoid loops) or a flash message with a description of the error and the option to submit feedback (which automatically includes a link to the Sentry error log) bonfire_ui_common/lib/ui_common.ex at main · bonfire-networks/bonfire_ui_common · GitHub
