diff --git a/comm/client/main.py b/comm/client/main.py
index 2376135863438e1306624c6c244756a8b653b48e..e23ef87df669c010139e35cda59eae923c3aea41 100644
--- a/comm/client/main.py
+++ b/comm/client/main.py
@@ -50,7 +50,9 @@ def start():
             "client": client_baseurl,
             "req_id": request.form['req_id'],
             "resolver": request.form['resolver']
-        } 
+        }
+
+        print(option['req_id'])
 
         pynqrouter.start_solver(boardstr, qseed, option)
 
diff --git a/solver/adc2018solver.py b/solver/adc2018solver.py
index 9e8660096c6a55387237dd646814663896677238..588927364024ce9f4d4d2ec61a8b6c1bff98cade 100644
--- a/solver/adc2018solver.py
+++ b/solver/adc2018solver.py
@@ -99,7 +99,7 @@ def solve(boardstr, seed=12345, zero_padding=False, option=dict()):
         solver_thread.stopped()
         solver_thread = None
         if "host" in option:
-            requests.post("http://{}/post".format(option['host']), data=res)
+            r = requests.post("http://{}/post".format(option['host']), data=res)
         return res
 
     # ボード文字列から X, Y, Z を読んでくる
@@ -149,7 +149,7 @@ def solve(boardstr, seed=12345, zero_padding=False, option=dict()):
             solver_thread.stopped()
             solver_thread = None
             if "host" in option:
-                requests.post("http://{}/post".format(option['host']), data=res)
+                r = requests.post("http://{}/post".format(option['host']), data=res)
             return res
 
     # 完了の確認
@@ -168,7 +168,7 @@ def solve(boardstr, seed=12345, zero_padding=False, option=dict()):
         mmio_led.write(0, 0)
         sys.stderr.write('Cannot solve it!\n')
         if "host" in option:
-            requests.post("http://{}/post".format(option['host']), data=res)
+            r = requests.post("http://{}/post".format(option['host']), data=res)
         solver_thread = None
         return res