QSqlError::text() returns space for successfull SQLite query

#include <QDebug>
#include <QSqlDatabase>
#include <QSqlError>
#include <QSqlQuery>
#include <QString>

int main()
{
    QSqlDatabase db{QSqlDatabase::addDatabase(QStringLiteral("QSQLITE"))};
    db.setDatabaseName(QStringLiteral(":memory:"));
    if (!db.open())
        qFatal("%s", qPrintable(db.lastError().text()));

    QSqlQuery q{db};
    q.exec(QStringLiteral("SELECT 1"));
    const QString error{q.lastError().text()};
    qDebug() << error;
}

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