The Binary data type should not be used in client-side modeling, except in the context of the File Input Field/<Value> element, and even then only when passed as part of the File data structure to a server-side process. You may find the client lenient on certain usages of a data structure containing a binary element, but in other cases you will encounter problems such as the one you did.
I recommend that you dedicate a database table in which you store your files, such as the following:
This dedicated table should not be referenced in any client-side modeling.
In your Account table, use the file Id instead of storing the file itself.
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