Syntax error needs explanation - Mailing list pgsql-general

I have the following script:

select c.company_nbr, c.company_name, i.industry, 
from companies as c, industry as i, enforcement as e
where exists (
   select c.company_nbr, count(e.action_date), sum(e.penalty_amt)
   from e.enforcement
   where c.company_nbr = e.company_nbr
   )
group by industry
order by industry;

When I run it psql reports an error:
psql:companies-with-enforcement-actions.txt:127: ERROR:  syntax error at or near "company_nbr"
LINE 1: company_nbr |               company_name
         ^
and I'm not seeing the error. What am I missing?

TIA,

Rich