I followed a tutorial on youtube about a memory game but mine had errors.
I had this runtime error before I had this error it was this error:
Select list item: Attempt to get item number 0, of the list ["antartica.jpg", "northamerica.png", "northamerica.png", "laurasia.jpg", "africa.jpg", "asia.jpg", "asia.jpg", "australia.jpg", "africa.jpg", "southamerica.png", "pangea.jpg", "southamerica.png", "laurasia.jpg", "europe.jpeg", "europe.jpeg", "australia.jpg", "antartica.jpg", "gondwanaland.jpg", "gondwanaland.jpg", "pangea.jpg"]. The minimum valid item number is 1. Note: You will not see another error reported for 5 seconds.
Then, when I change buttonIndex to 1 I got this already
Property setter was expecting a com.google.appinventor.components.runtime.Button component but got a String instead. Note: You will not see another error reported for 5 seconds.
You only set global firstBtn and global secBtn to a button component on the AnyButtonClicked event, whereas your clock timer tries to set properties to these two "buttons" when the variables are empty text blocks. I assume you clock timer starts when the app starts, before any buttons are clicked. You need to fix this.
