Postgresql column not exists when trying to insert

Question

DROP TABLE IF EXISTS workspace;

CREATE TABLE "workspace" (
            "wk_space" VARCHAR(100) NOT NULL,
            "token" TEXT,
            PRIMARY KEY("wk_space", "token")
        );
        
INSERT INTO "workspace" ("wk_space", "token") VALUES ("team1", "upreawnysoafa22sva") ON CONFLICT (wk_space, token) DO NOTHING;

SELECT * FROM workspace;

This will give an error saying column "team1" does not exist. If I replace the values ("team1", "upreawnysoafa22sva") to numbers like (11, 22), it works fine. I don't know what's going wrong.