Error with sqlite QSqlError("10", "Unable to fetch row", "disk I/O error")

[Charlie_Billy]

Hello, I'm trying to make a Discord guild saver, but there is this error ocurring "randomly" which prevent me from doing it.
Here is my code : https://pastebin.com/KZiiwVtu
Sometime the error only appear on guild, but it doesn't save all the channels to the db, and rows are inserted randomly :

QVariant(QString, "vérification")
QSqlError("", "", "") channel
QVariant(QString, "info")
QSqlError("", "", "") channel
QVariant(QString, "alertes??")
QSqlError("", "", "") channel
QVariant(QString, "Général ??")
QSqlError("", "", "") channel
QVariant(QString, "??annonces")
QSqlError("", "", "") channel
QVariant(QString, "général")
QSqlError("", "", "") channel
QVariant(QString, "partenaires??")
QSqlError("", "", "") channel
QVariant(QString, "report??")
QSqlError("", "", "") channel
QVariant(QString, "aide??")
QSqlError("", "", "") channel
QVariant(QString, "event")
QSqlError("", "", "") channel
QVariant(QString, "Autres ??")
QSqlError("", "", "") channel
QVariant(QString, "suggestions")
QSqlError("", "", "") channel
QVariant(QString, "shitpost??")
QSqlError("", "", "") channel
QVariant(QString, "commandes")
QSqlError("", "", "") channel
QVariant(QString, "Vocal")
QSqlError("", "", "") channel
QVariant(QString, "AFK??")
QSqlError("", "", "") channel
QVariant(QString, "Le Repaire")
QSqlError("", "", "") channel
QVariant(QString, "bla-bla")
QSqlError("", "", "") channel
QVariant(QString, "blacklist")
QSqlError("", "", "") channel
QVariant(QString, "preuves")
QSqlError("", "", "") channel
QVariant(QString, "serveurs-raid")
QSqlError("", "", "") channel
QVariant(QString, "Staff")
QSqlError("", "", "") channel
QVariant(QString, "annonces")
QSqlError("", "", "") channel
QVariant(QString, "général-staff")
QSqlError("", "", "") channel
QVariant(QString, "report-a-valider")
QSqlError("", "", "") channel
QVariant(QString, "reglement")
QSqlError("", "", "") channel
QVariant(QString, "vocal-sans-micro")
QSqlError("", "", "") channel
QVariant(QString, "Vocal Staff")
QSqlError("", "", "") channel
QVariant(QString, "Mail")
QSqlError("", "", "") channel
QVariant(QString, "modmail-logs")
QSqlError("", "", "") channel
QVariant(QString, "logs")
QSqlError("", "", "") channel
QVariant(QString, "altidentifier-logs")
QSqlError("", "", "") channel
QVariant(QString, "join-logs")
QSqlError("", "", "") channel
QVariant(QString, "logs")
QSqlError("", "", "") channel
QVariant(QString, "Bureau des directeurs")
QSqlError("", "", "") channel
QVariant(QString, "discussion")
QSqlError("", "", "") channel
QVariant(QString, "bot-config")
QSqlError("", "", "") channel
QVariant(QString, "gitlab-commits")
QSqlError("", "", "") channel
QVariant(QString, "Réunions")
QSqlError("", "", "") channel
QSqlError("10", "Unable to fetch row", "disk I/O error") guild
QSqlQuery::value: not positioned on a valid record
QSqlDatabasePrivate::removeDatabase: connection 'saveGuild' is still in use, all queries will cease to work.

but most of the time saving the guild works but this error occurs with every channel :

QSqlError("10", "Unable to fetch row", "disk I/O error") channel

I have no idea of what's happening and why, could somebody help me pls ?

[Christian Ehrlicher]

disk i/o error sounds like you've some problems with your harddisk - you should check it.

[Charlie_Billy]

It works fine with other requests, and my hard drives work well. The program is on D:, and the db in AppData/Roaming on C:

[SGaist]

Hi,

Does it also happen if you put your database somewhere else ?

[Charlie_Billy]

Yes, i tried in the program's folder

[SGaist]

I meant on a different physical disk like e.g. an USB key.