permission denied for schema ctgov; SQL state: 42501

I am new to postgresql and I would grateful if you could please advise on how-to resolve the following error.. I have issued the followed commands:

VIEW cancer_view AS
SELECT sub1.nct_id, sub1.condition, sub1.condition_name,
		sub2.overall_status, sub2.participants,
		e.criteria,
		f.city, f.state, f.country,
		i.intervention_type, i.name AS intervention
FROM (SELECT c.nct_id, c.name AS condition, c.downcase_name AS condition_name
		FROM ctgov.conditions AS c
-- selecting only cancer trials before joining
		WHERE c.name ILIKE '%cancer%') sub1									
JOIN (SELECT s.nct_id, s.overall_status, s.enrollment AS participants
 		FROM ctgov.studies AS s
-- selecting only completed cancer trials before joining 	
	  	WHERE s.overall_status = 'Completed') sub2							
	ON sub1.nct_id = sub2.nct_id
JOIN ctgov.eligibilities AS e
	ON sub1.nct_id = e.nct_id
JOIN ctgov.facilities AS f
	ON sub1.nct_id = f.nct_id
JOIN ctgov.interventions AS i
	ON sub1.nct_id = i.nct_id;

And the error is: ERROR: permission denied for schema ctgov SQL state: 42501 Could you please advise on how to setup the privileges to have access to the tables defined in schema? Thank you in advance!!!