AndroidArchitecture' does not contain a definition for 'X86'

i was testing the new 2d skeleton Animation features and the PSD importer in version 2019.3.0a6
and it gives me this error and i cannot enter Play Mode

i´ve read in another posts and forums that the solution is to update Burst Compiler but i cant find it in Package Manager…

,i was testing the 2D animation features in Unity 2019 3.0a6

and i cant enter playmode cause this error

iv read in other posts that you must update Burst Compiler in Package Manager but i cant see the Package…

@Alex_Night | I was having the same issue, for me, I had to un-check the x86 option in the Player Setting on Build. It worked after that… I’m on 2018.3… hope that helps