Need help runtime error

[akangkha_choudhury]

hey, I am getting the foloowing error in my app. Can someone help me ?

java.lang.NoSuchMethodError: No virtual method AlignHorizontal(Ljava/lang/Object;)V in class Lcom/google/appinventor/components/runtime/HVArrangement; or its super classes (declaration of ‘com.google.appinventor.components.runtime.HVArrangement’ appears in base.apk)

[bidder_boons]

show your blocks or screenshots

[akangkha_choudhury]

here are the blocks :

[bidder_boons]

“main” is vertical or horizontal arrangement

[akangkha_choudhury]

Vertical Arrangement