Bcrypt hashedSecret Too Short to Be a Bcrypted Password

I want to create a user authentication system using Go and I am stuck with logging into an account. I use bcrypt to hash passwords than I save it to the database (MySQL). The problem shows when I want to compare it with an inserted password. I have this error: hashedSecret too short to be a bcrypted password. I don't know what I'm doing wrong. Here is my code:

models.go

type User struct {
    ID       string `json:"id"`
    Username string `json:"username"`
    Password string `json:"password"`
    IsAdmin  bool   `json:"is_admin"`
}

user-routes.go (login func)

err := db.QueryRow("SELECT Password FROM Users WHERE Username = ?", user.Username).Scan(&storedPass)
    if err != nil {
        log.Fatal(err)
    }
    // hashed password
    fmt.Println(storedPass, []byte(storedPass))
    err = bcrypt.CompareHashAndPassword([]byte(storedPass), []byte(user.Password))
    if err != nil {
        // Here is error
        fmt.Println(err.Error())
    }

user-routes.go (register func)

stmt, err := db.Prepare(`INSERT INTO Users(Username, Password, IsAdmin) VALUES (?, ?, 0)`)
    if err != nil {
        log.Fatal(err)
    }
hash, _ := bcrypt.GenerateFromPassword([]byte(user.Password), 10)
res, err := stmt.Exec(user.Username, string(hash))

It looks like the error is when I compare hashed password with an inserted password. Also, I save a password to a database without any errors.

+----+----------+----------------------------------------------------+---------+
| ID | Username | Password                                           | IsAdmin |
+----+----------+----------------------------------------------------+---------+
| 38 | test2    | $2a$10$5WwRQahtjgmaeIKRGXGZNOLVAv5EXUidRwbnZeryq9e |       0 |
+----+----------+----------------------------------------------------+---------+