PyQt5 Error connection to Mysql "Driver not loaded"

I did not manage to solve this error that appears to me when trying to connect to a Mysql database with PyQt5

Instruction used:

from PyQt5.QtSql import QSqlDatabase, QSqlQuery, QSqlTableModel
from PyQt5.QtWidgets import QTableView, QApplication
import sys


def dbcon():
    db = QSqlDatabase.addDatabase('QMYSQL')
    db.setHostName('localhost')
    db.setDatabaseName('db_librowad')
    db.setUserName('root')
    db.setPassword('12345')
    ok = db.open()
    if not ok: print(db.lastError().text())
    # else: print("connected")
    query = QSqlQuery(db)
    query.exec_('SELECT * FROM tbl_Customers')


if __name__ == '__main__':
    app = QApplication(sys.argv)
    dbcon()

Error Message

QSqlDatabase: QMYSQL driver not loaded
QSqlDatabase: available drivers: QSQLITE QMYSQL QMYSQL3 QODBC QODBC3 QPSQL QPSQL7
Driver not loaded Driver not loaded
QSqlQuery::exec: database not open
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