Check for errors while populating the match below

app/controllers/matches_controller.rb

@@ -14,7 +14,11 @@ class MatchesController < ApplicationController
   def update
     new_state = match_params['state']
     if new_state == 'finished'
-      PopulateMatchBelowAndSave.call(match:@match) unless @match.group_match?
+      result = PopulateMatchBelowAndSave.call(match: @match) unless @match.group_match?
+      unless result.success?
+        render json: { error: 'Moving Team one stage down failed' }, status: :unprocessable_entity
+        return
+      end
     end
     if @match.update(match_params)
       render json: @match