Itgenoda137 Brevo error bij join

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,
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Bij het uitvoeren van de volgende queries treedt een foutmelding op:

create or replace table contacts_soll@inmemorystorage
as
select email
,      FIRSTNAME
,      LASTNAME
,      COMPANY
,      category
from   exceltable
       ( worksheet 1
         passing file 'file.xlsx'
         skip first 1 rows
         columns email      varchar2 position next
         ,       FIRSTNAME  varchar2 position next
         ,       LASTNAME   varchar2 position next
         ,       COMPANY    varchar2 position next
         ,       category   varchar2 position next
       )

select *
from   contacts_soll@inmemorystorage s
left
outer
join   contacts i
on     i.email = s.email

namelijk:

itgenoda137
The Sendinblue server cannot or will not process the request due to an apparent client error (e.g., malformed request syntax, size too large, invalid request message framing, or deceptive request routing).
https://api.sendinblue.com/v3/contacts/System.Collections.Generic.HashSet`1[System.Object]

De hyperlink heeft een rare inhoud met “hashset”.