[1.4 testing]Can't locate object method "dbh" via package

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I am getting an Error;
'Can't locate object method "dbh" via package "LedgerSMB::Business_Unit"
at LedgerSMB/Business_Unit.pm line 142.'

That line 142 refers me to business_unit__save

Looking in the DB with:
select proname,prosrc from pg_proc where proname= 'business_unit__save' ;
It seems I have the function.

Cheers turtle