Unity does not create app for Android

I was trying to create a game for Android , and when I try to export it with apk build I get the status bar that informs me of the progress , but when it ends my file there , the program does not create it .
I installed both android sdk jdk that and set the parameters of the player . why is this happening ?

the program and within another folder called 12.0.2 in the Tools folder out of the copied folder 12.0.2 but the result does not change