Manual task not triggering

export class Modlog {
// code
public async createMute(data: MuteCreateInput) {
        const mute = await container.db.mute.create({
            data: {
                expiresAt: data.expiresAt,
                memberId: this.memberId,
                removedRoles: data.removedRoles ? data.removedRoles : [],
                modlog: {
                    create: await this.createModlog()
                }
            }
        });

        if (data.expiresAt) {
            const offset = data.expiresAt.getTime() - Date.now();
            console.log(offset);
            container.tasks.create('UnmuteMemberTask', { muteId: mute.id }, offset);
        }

        await this.sendModlog(mute.modlogId);

        return this;
    }
// code 
}