Why deleting from a table does not work in PostgreSQL - sql

Question

I tried deleting a row from a table but the result was
DELETE 0
When I created a copy of the original table and performed the delete on the new copy-table
the result was: DELETE 1 as expected
I've created a trigger function that updates a column on a different table upon inserting or deleting is there an option that this is the problem?
Does anyone know what might be the problem ??
P.S. I post a similar to the creation code of the original table because it has been altered for the next parts of the university project and the trigger function's code
P.S.2 A friend who has the same exact database, table, trigger function etc.
doesn't have this problem
create table Listings(
id int,
listing_url varchar(40),
scrape_id bigint,
last_scraped date,
name varchar(140),
summary varchar(1780),
space varchar(1840),
description varchar(2320),
experiences_offered varchar(10),
neighborhood_overview varchar(1830),
notes varchar(1790),
transit varchar(1810),
access varchar(1830),
interaction varchar(1340),
house_rules varchar(1820),
thumbnail_url varchar(10),
medium_url varchar(10),
picture_url varchar(150),
xl_picture_url varchar(10),
street varchar(90),
neighbourhood varchar(20),
neighbourhood_cleansed varchar(70),
neighbourhood_group_cleansed varchar(10),
city varchar(40),
state varchar(60),
zipcode varchar(20),
market varchar(30),
smart_location varchar(40),
country_code varchar(10),
country varchar(10),
latitude varchar(10),
longitude varchar(10),
is_location_exact boolean,
property_type varchar(30),
room_type varchar(20),
accommodates int,
bathrooms varchar(10),
bedrooms int,
beds int,
bed_type varchar(20),
amenities varchar(1660),
);
CREATE FUNCTION Vs()
RETURNS "trigger" AS
$Body$
BEGIN
IF(TG_OP='INSERT')THEN
UPDATE "Host"
SET listings_count = listings_count + 1
WHERE id = NEW.host_id;
RETURN NEW;
ELSIF(TG_OP='DELETE')THEN
UPDATE "Host"
SET listings_count = listings_count -1
WHERE id = OLD.host_id;
RETURN OLD;
END IF;
END;
$Body$
LANGUAGE 'plpgsql' VOLATILE;
CREATE TRIGGER InsertTrigger
before INSERT
ON "Listing"
FOR EACH ROW
EXECUTE PROCEDURE Vs();
CREATE TRIGGER DeleteTrigger
before DELETE
ON "Listing"
FOR EACH ROW
EXECUTE PROCEDURE Vs();