Postgrex ERROR 25P02 on Uneebee.Content.add_user_lesson/1

[sentry-io]

Sentry Issue: UNEEBEE-N

Postgrex.Error: ERROR 25P02 (in_failed_sql_transaction) current transaction is aborted, commands ignored until end of transaction block
  File "lib/ecto/adapters/sql.ex", line 1054, in Ecto.Adapters.SQL.raise_sql_call_error/1
  File "lib/ecto/repo/schema.ex", line 775, in Ecto.Repo.Schema.apply/4
  File "lib/ecto/repo/schema.ex", line 377, in anonymous fn/15 in Ecto.Repo.Schema.do_insert/4
  File "lib/ecto/adapters/sql.ex", line 1358, in anonymous fn/3 in Ecto.Adapters.SQL.checkout_or_transaction/4
  File "lib/db_connection.ex", line 1710, in DBConnection.run_transaction/4
...
(3 additional frame(s) were not displayed)

[wceolin]

Unable to reproduce this issue, moving it to the backlog until it happens again.