Unable to build apk

Hi, I have a problem, can someone please help me:

1 ERROR

System.String sdkToolsDir, System.String[] sdkToolCommand, Int32 memoryMB, System.String workingdir, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg) UnityEditor.HostView:OnGUI()

2 ERROR

UnityEditor.BuildPlayerWindow+BuildMethodException: Build failed with errors.
  at UnityEditor.BuildPlayerWindow+DefaultBuildMethods.BuildPlayer (BuildPlayerOptions options) [0x001b9] in C:\buildslave\unity\build\Editor\Mono\BuildPlayerWindowBuildMethods.cs:162 
  at UnityEditor.BuildPlayerWindow.CallBuildMethods (Boolean askForBuildLocation, BuildOptions defaultBuildOptions) [0x00050] in C:\buildslave\unity\build\Editor\Mono\BuildPlayerWindowBuildMethods.cs:83 
UnityEditor.HostView:OnGUI()

Does anyone know what this means? Thanks.

hi;

sorry for late Response;

do these steps :

1 - deleted the 24.0.0 build tools folder from Android\sdk\build-tools

2 - Confirm check your environment path
JAVA_HOME C:\Program Files (x86)\Java\jdk1.8.0_11\bin

3 - copy
zipalign.exe file from > D:\adt-bundle-windows-x86_64-20131030\adt-bundle-windows-x86_64-20140702\adt-bundle-windows-x86_64-20140702\sdk\build-tools\android-4.4W

or where ever you have it and then Past to
D:\adt-bundle-windows-x86_64-20131030\adt-bundle-windows-x86_64-20140702\adt-bundle-windows-x86_64-20140702\sdk ools

Check in Unity module settings that you have all the paths pointed correctly. I.e. Tools path/ Jdk path and the last option I cannot remember but its not important unless using il2cpp.