pq: could not resize shared memory segment "/PostgreSQL.1924253841" to 12615680 bytes: No space left on device

SELECT to_timestamp(floor((extract('epoch' from recvtime)/ 1800 )) * 1800)as time,
avg(attrvalue::float) as relativeHumidity
FROM urbansense.weather WHERE attrname='relativeHumidity' AND attrvalue<>'null' GROUP BY time ORDER BY time asc;

$ vim postgres-data/log/postgresql-2019-06-26_162920.log
 .
 .
2019-06-26 16:30:53.139 UTC [42] LOG:  statement: SELECT to_timestamp(floor((extract('epoch' from recvtime)/ 1800 )) * 1800) as time,
        avg(attrvalue::float) as o3
        FROM urbansense.airquality WHERE attrname='O3' AND attrvalue<>'null' GROUP BY time ORDER BY time asc;
2019-06-26 16:30:55.752 UTC [39] ERROR:  could not resize shared memory segment "/PostgreSQL.309696130" to 12615680 bytes: No space left on device
2019-06-26 16:30:55.752 UTC [39] STATEMENT:  SELECT to_timestamp(floor((extract('epoch' from recvtime)/ 1800 )) * 1800)as time,
        avg(attrvalue::float) as relativeHumidity
        FROM urbansense.weather WHERE attrname='relativeHumidity' AND attrvalue<>'null' GROUP BY time ORDER BY time asc;
2019-06-26 16:30:55.756 UTC [40] FATAL:  terminating connection due to administrator command
2019-06-26 16:30:55.756 UTC [40] STATEMENT:  SELECT to_timestamp(floor((extract('epoch' from recvtime)/ 1800 )) * 1800)as time,
        avg(attrvalue::float) as relativeHumidity
        FROM urbansense.weather WHERE attrname='relativeHumidity' AND attrvalue<>'null' GROUP BY time ORDER BY time asc;
2019-06-26 16:30:55.758 UTC [41] FATAL:  terminating connection due to administrator command
2019-06-26 16:30:55.758 UTC [41] STATEMENT:  SELECT to_timestamp(floor((extract('epoch' from recvtime)/ 1800 )) * 1800)as time,
        avg(attrvalue::float) as relativeHumidity
        FROM urbansense.weather WHERE attrname='relativeHumidity' AND attrvalue<>'null' GROUP BY time ORDER BY time asc;
2019-06-26 16:30:55.768 UTC [1] LOG:  worker process: parallel worker for PID 39 (PID 40) exited with exit code 1
2019-06-26 16:30:55.768 UTC [1] LOG:  worker process: parallel worker for PID 39 (PID 41) exited with exit code 1

version: "3.5"
services:

#some containers definitions go here..

 postgres:
    restart: always
    image: postgres:10
    hostname: postgres
    container_name: fiware-postgres
    expose:
      - "5432"
    ports:
      - "5432:5432"
    networks:
      - default
    environment:
      - "POSTGRES_PASSWORD=password"
      - "POSTGRES_USER=postgres"
      - "POSTGRES_DB=postgres"
    volumes:
      - ./postgres-data:/var/lib/postgresql/data
    build:
      context: .
      shm_size: '4gb'