diff --git a/app.py b/app.py
index 1f3a882..0d1ba6e 100755
--- a/app.py
+++ b/app.py
@@ -34,5 +34,8 @@ def getPR(site, username):
 
 if __name__ == '__main__':
     click.echo("Welcome to Code Review System\n")
-    execute_board()
+    try:
+        execute_board()
+    except yaml.YAMLError as exc:
+        print(exc)