20221014 phoneNumber 改為非必填

app/Http/Controllers/Api/SeminarSignUpController.php

             $backupEmail_orig = '';
         }
         
-        $phoneNumber_orig = $request->input('phoneNumber', '');
-        $phoneNumber = $this->safeEncrypt($phoneNumber_orig, 'arm');
+        $phoneNumber = $request->input('phoneNumber', '');
+        if (!is_null($phoneNumber)) {
+        
+            $phoneNumber_orig = $request->input('phoneNumber', '');
+            $phoneNumber = $this->safeEncrypt($phoneNumber_orig, 'arm');
+        } else {
+            $phoneNumber_orig = '';
+        }
+        
+        // $phoneNumber = $this->safeEncrypt($phoneNumber_orig, 'arm');
         
         $country = $request->input('country', '');
         $registeredSession = $request->input('registeredSession', '');