Null-pointer in getThemeColor

[sk22]

Exception java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.TypedArray android.content.Context.obtainStyledAttributes(int[])' on a null object reference
  at org.joinmastodon.android.ui.utils.UiUtils.getThemeColor (UiUtils.java:326)
  at org.joinmastodon.android.ui.utils.UiUtils.insetPopupMenuIcon (UiUtils.java:762)
  at org.joinmastodon.android.fragments.HomeTabFragment.lambda$updateSwitcherMenu$5 (HomeTabFragment.java:327)
  at org.joinmastodon.android.fragments.HomeTabFragment.$r8$lambda$elH3ZazXJVkH-s9tdp2Uv0ZE-jo (HomeTabFragment.java)
  at org.joinmastodon.android.fragments.HomeTabFragment$$InternalSyntheticLambda$4$734da36b12697faf7d1a198fc1582c7dd81f04d1b54417ad4743710824796d22$1.accept (HomeTabFragment.java)
  at j$.util.Map$-EL.forEach (Map.java)
  at org.joinmastodon.android.fragments.HomeTabFragment.updateSwitcherMenu (HomeTabFragment.java:324)
  at org.joinmastodon.android.fragments.HomeTabFragment.addItemsToMap (HomeTabFragment.java:300)
  at org.joinmastodon.android.fragments.HomeTabFragment.-$$Nest$maddItemsToMap (HomeTabFragment.java)
  at org.joinmastodon.android.fragments.HomeTabFragment$3.onSuccess (HomeTabFragment.java:203)
  at org.joinmastodon.android.fragments.HomeTabFragment$3.onSuccess (HomeTabFragment.java:200)
  at me.grishka.appkit.api.APIRequest$1.run (APIRequest.java:29)
  at android.os.Handler.handleCallback (Handler.java:938)
  at android.os.Handler.dispatchMessage (Handler.java:99)
  at android.os.Looper.loopOnce (Looper.java:226)
  at android.os.Looper.loop (Looper.java:313)
  at android.app.ActivityThread.main (ActivityThread.java:8855)
  at java.lang.reflect.Method.invoke (Method.java)
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:571)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1135)