Error (500) at https://kc.kobotoolbox.org/submission?deviceID=collect%3AiOwhGTr1XqssQHhV

I have problem in sending data after finalize and it says Error (500) at https://kc.kobotoolbox.org/submission?deviceID=collect%3AiOwhGTr1XqssQHhV.

Need to solve urgently

Welcome to the community, @akibul_islam! Can you confirm if you are able to submit your data through the web form? Could you also let us know if your form has any media attachments like audio, video, images or file attachments? These details should help us identify your issue and help you out.

Yes, I can submit the data through web form. and I do not have any media attachments. The main problem is, I can not submit using Kobocollect app. The system says the following message. Please help me regarding this.

@akibul_islam, have you activated MFA for your account?