Granting privileges to a schema to a role

psql webdata -U trav

psql (15.4 (Ubuntu 15.4-1.pgdg22.04+1))

Type "help" for help.

webdata=> \dp trav.sectors

                                 Access privileges

 Schema |  Name   | Type  |    Access privileges    | Column privileges | Policies 

--------+---------+-------+-------------------------+-------------------+----------

 trav   | sectors | table | webdata=arwdDxt/webdata+|                   | 

        |         |       | trav=arwdDxt/webdata    |                   | 

(1 row)

webdata=> select sectorname, count(worldname) from trav.sectors group by sectorname order by sectorname;

ERROR:  permission denied for schema trav

LINE 1: select sectorname, count(worldname) from trav.sectors group ...