Error when sending the confirmation email

I ran into a loosly related issue and just wanted to document it somewhere.

(ArgumentError) unknown registry: PetalPro.Finch
 (elixir 1.14.4) lib/registry.ex:1382: Registry.key_info!/1
 (elixir 1.14.4) lib/registry.ex:580: Registry.lookup/2
 (finch 0.15.0) lib/finch/pool_manager.ex:44: Finch.PoolManager.lookup_pool/2
 (finch 0.15.0) lib/finch/pool_manager.ex:34: Finch.PoolManager.get_pool/2
 (finch 0.15.0) lib/finch.ex:284: Finch.__stream__/5
 (finch 0.15.0) lib/finch.ex:324: anonymous fn/4 in Finch.request/3
 (telemetry 1.2.1) /app/deps/telemetry/src/telemetry.erl:321: :telemetry.span/3
 (swoosh 1.9.1) lib/swoosh/api_client/finch.ex:59: Swoosh.ApiClient.Finch.post/4

The :finch_name didn’t match what was set in my application.ex supervisory tree.