See getsentry/sentry-cli#2137 (comment)
v1.run vercel deploy doesn't build and deploy onto vercel out of the box because of this confusing and inactionable message from sentry. I've attempted package updates on @sentry/nextjs to no effect.
Also general feedback for midday crew -- imo monitoring / logging env vars shouldnt be mandatory for example / template repos. Conditional checks should be added to test for null envs and bypass that feature in the v1 template.