Add error info for getKeyringForAccount

index.js

@@ -676,7 +676,19 @@ class KeyringController extends EventEmitter {
         if (winners && winners.length > 0) {
           return winners[0][0]
         }
-        throw new Error('No keyring found for the requested account.')
+
+        // Adding more info to the error
+        let errorInfo = 'Error info: '
+        if (!address) {
+          errorInfo += 'The address passed in is invalid/empty; '
+        }
+        if (!candidates || !candidates.length) {
+          errorInfo += 'There are no keyrings; '
+        }
+        if (!winners || !winners.length) {
+          errorInfo += 'There are keyrings, but none match the address;'
+        }
+        throw new Error(`No keyring found for the requested account. ${errorInfo}`)
 
       })
   }