Windows 10 Update (1903) - update error. can I safely not update?

I have just realized Windows 10 1903 update never went through and that I am still on 1709.

Feature update to Windows 10, version 1903 - Error 0xc190012e

Using the update assistant ( Windows 10 Update Assistant ) didn’t help - and I well remember last time I tried to install update via ISO it broke quite a few things (I assume being the installation on Eve a custom one)

Any clue?

Beyond features, is not making this update a security issue?

Yes…Every update has worked for me without issue. Be sure you have not disabled updates. Maybe your update program is corrupted. Check Windows trouble shooting (Built-in) and run the Windows update troubleshooter.