Can't compile

[larsziegelmann]

When I try to build the APK, I get the following error:

error: package MDMService does not existString password = MDMService.Preferences.get(cfgPrefix + Const.PREF_PASSWORD, "").trim();

[h-mdm]

Package MDMService is a part of app/libs/hmdm-1.0.6.aar library. It is added in build.gradle but if you changed the source code you may miss this library.

[larsziegelmann]

that's weird, I didn't want to change anything yet.
somehow the error vanished and I just got the following error now:
"enterDeviceIdDialogBinding.showDeviceIdQrCode.setVisibility((Utils.isDeviceOwner(this) || BuildConfig.FLAVOR.equals("system")) ? View.VISIBLE : View.GONE);
^
symbol: variable FLAVOR
location: class BuildConfig"

I also go these warnings:
DSL element 'android.dataBinding.enabled' is obsolete and has been replaced with 'android.buildFeatures.dataBinding'.
and
The specified Android SDK Build Tools version (28.0.3) is ignored, as it is below the minimum supported version (29.0.2) for Android Gradle Plugin 4.0.1.

[h-mdm]

Which software are you building? Headwind MDM Launcher or APN plugin? This project is the APN plugin, not the launcher.
Also, which IDE are you using to build the software?