diff --git a/app/src/main/java/lightcontainer/domains/client/ClientHandler.java b/app/src/main/java/lightcontainer/domains/client/ClientHandler.java
index 15f1ed5..6a3faa3 100644
--- a/app/src/main/java/lightcontainer/domains/client/ClientHandler.java
+++ b/app/src/main/java/lightcontainer/domains/client/ClientHandler.java
@@ -116,7 +116,9 @@ public class ClientHandler implements Runnable, AutoCloseable {
                 } else {
                     authentication(ruleResult);
                 }
-            } catch (IOException ignore) { }
+            } catch (IOException ignore) {
+                ignore.printStackTrace();
+            }
 
         }
     }
diff --git a/ffe.labo.swilabus.com.p12 b/ffe.labo.swilabus.com.p12
new file mode 100644
index 0000000..98ca601
Binary files /dev/null and b/ffe.labo.swilabus.com.p12 differ