Hi,
With these major upgrades, the most successful method is to upgrade from the Windows 10 ISO - you may download the ISO and then perform an Offline Upgrade. It may help avoid possible problems with your current installation such as Windows Update.
https://www.microsoft.com/en-us/software-download/windows10
See also:https://pureinfotech.com/avoid-problems-installing-windows-10-1903-april-2019-update/
Note: This is a third-party link and we do not have any guarantees on this website. And Microsoft does not make any guarantees about the content.