Can't reproduce, and given that we aren't knee-deep in bug reports, I kinda doubt it's as simple as 'lombok is just broken on the current version of eclipse now'.
Can you explain precisely where this error is appearing and how (is it an error in the problems/warnings view, or in the error log view? On what exact line/charpos is it? Is it within eclipse or when you try to compile it outside of eclipse? What plugins are installed? Is this a maven or gradle kinda project or just a plain jane java project?
If it's truly as simple as this, what happens when you install the 'java development' version of eclipse 2019-03?
What kind of platform are you running this on, which JVM is running eclipse (you can see this in eclipse's about dialog)?