It looks like Rails schema.rb import where foreign keys that were generated with
on_delete: nullify in the migration fail to parse.
schema.rb contains a line like this
add_foreign_key "model1", "model2", on_delete: :nullify
the translated input after import contains a line like this
Ref "fk_rails_model1_model2":"model1"."model2_id" - "model2"."id" [delete: nullify]
and raises an error about the [delete: nullify] behavior
Expected cascade, comment, no action, restrict, set default, set null, or whitespace but "n" found.
I expect the output should have been
set null, and confirmed this by editing the generated input (once the nullify triggers were removed the schema image was rendered correctly).