Unity android compilation error

Trying to build android application. giving me error saying

“CommandInvokationFailure: Unable to list target platforms. Please make sure the android sdk path is correct. See the Console for more details.
C:/Program Files/Java/jdk1.8.0_20\bin\java.exe -Xmx2048M -Dcom.android.sdkmanager.toolsdir=“C:/Users/zdiamond/AppData/Local/Android/sdk1 ools” -Dfile.encoding=UTF8 -jar “C:\Program Files\Unity\Editor\Data\PlaybackEngines\AndroidPlayer/Tools\sdktools.jar” -”

and my OS is windows 7. any help would be appreciated. Thank you so much!

Game is 2D if needed, but I don’t think that matters. The game is done, just need help before saturday. PLEASE

This is an issue with the latest Android SDK. You can read more about it, and how to resolve it, in this link: https://forum.unity3d.com/threads/unity3d-5-5-0fx-unable-to-list-target-platforms-error.446096/