Upon building it's asking for the Android SDK folder, but I installed it through the Hub?

I added android build support to the unity version that my project uses:

But when I click build, it opens a windows open dialogue asking me to “Select Android SDK directory”. It also now does it every time I hit play.

Isn’t that supposed to be installed automatically by the hub? I am not sure where unity installs it to so I can’t locate it manually.

Not sure if this matters, but in Preferences > External Tools > Android the paths are empty:

Any idea what I should do? I was going to try to install the SDK manually, but wastn’t sure which to download here.

Hi, the Hub does not install external dependencies for Unity 2018. Please follow the setup guide here Unity - Manual: Android environment setup