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Date and time: Mon, 10 May 2021 03:01:21 GMT
Operation: 8403389a-0ce3-42a2-9bfb-9ff67d0be926

Something went wrong.
An error has occurred
Date and time: Mon, 10 May 2021 03:01:21 GMT
Operation: 8403389a-0ce3-42a2-9bfb-9ff67d0be926
Within this context there are not that much info of what you did.
Best suggestion is to restart everything from scratch and follow EXACTLY what is written here
docs.microsoft.com/.../upgrade-unmodified-application-v16-to-v17
If you cannot make it this second time, please open a request to Microsoft support through your CSP or reseller or hire a skilled 3rd party freelance to troubleshoot your upgrade path and dig deeper in every step.