Cache lookup failed for type 70385664

For a certain record in our database I'm getting cache lookup failures
(ERROR: cache lookup failed for type 70385664). And only for one of
the 2 array columns in that record.

The table definition is:

\d inhoudingen
Table "public.inhoudingen"
Column | Type | Modifiers
----------------------+-----------------------------+-----------
verkoop_id | bigint | not null
regel | smallint | not null
bedrag | numeric(12,2) | not null
berekend_op | timestamp(0) with time zone |
berekend_bedrag | numeric(12,2) |
comp_bedrag | numeric(12,4)[] |
comp_naam | character varying(25)[] |
omschrijving | character varying(100) |
Indexes:
"geen_dubbele_idx" PRIMARY KEY, btree (verkoop_id, regel)
Foreign-key constraints:
"inhoudingen_fk" FOREIGN KEY (verkoop_id) REFERENCES verkoop(id)
ON UPDATE CASCADE ON DELETE CASCADE
"inhoudingen_fk1" FOREIGN KEY (regel) REFERENCES regels(id) MATCH
FULL ON UPDATE CASCADE ON DELETE RESTRICT

And the column comp_naam is giving this error for one specific record.

The database was put in shutdown mode today without a reason (as in,
we don't know why it did that, yet) and since then it's giving this
error.

I'm now wondering what I can do to fix this. Do I need to delete that
record, or is there a way to recover it?

Regards,
Wessel van Norel