Server returning 500 error

[jbedo]

Using the IMAP authenticator I am encountering a 500 error. I think this is the relevant part of the log:

<h1>IntegrityError
at /acme/directory</h1>
<pre class="exception_value">(1451, &#x27;Cannot delete or update a parent row: a foreign key constraint fails (`castle_acme`.`acme_app_challenge`, CONSTRAINT `acme_app_challenge_authorization_id_00481fd5_fk_acme_app_` FOREIGN KEY (`authorization_id`) REFERENCES `acme_app_authorization` (`id`))&#x27;)</pre>
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Any suggestions on how to resolve this? Would more of the log help?

[polhenarejos]

Fixed