diff --git a/.vscode/PythonImportHelper-v2-Completion.json b/.vscode/PythonImportHelper-v2-Completion.json
index b172435..e2a2e23 100644
--- a/.vscode/PythonImportHelper-v2-Completion.json
+++ b/.vscode/PythonImportHelper-v2-Completion.json
@@ -1678,6 +1678,14 @@
         "detail": "rest_framework",
         "documentation": {}
     },
+    {
+        "label": "status",
+        "importPath": "rest_framework",
+        "description": "rest_framework",
+        "isExtraImport": true,
+        "detail": "rest_framework",
+        "documentation": {}
+    },
     {
         "label": "TestCase",
         "importPath": "django.test",
@@ -1745,6 +1753,14 @@
         "detail": "django.http",
         "documentation": {}
     },
+    {
+        "label": "get_object_or_404",
+        "importPath": "django.shortcuts",
+        "description": "django.shortcuts",
+        "isExtraImport": true,
+        "detail": "django.shortcuts",
+        "documentation": {}
+    },
     {
         "label": "parse_image",
         "importPath": "api.tracer",
@@ -8516,7 +8532,7 @@
         "kind": 6,
         "importPath": "back.api.views",
         "description": "back.api.views",
-        "peekOfCode": "class FloorplanPointsView(APIView):\n    def get(self, request, id):\n        if FloorplanPoints.objects.filter(plan=id).exists():\n            points = FloorplanPoints.objects.get(plan=id)\n            serializer = FloorplanPointsSerializer(points, many=False)\n            return JsonResponse(serializer.data, safe=False)\n        else:\n            return JsonResponse(\"No item\", status=400)\n    def post(self, request, id):\n        data = JSONParser().parse(request)",
+        "peekOfCode": "class FloorplanPointsView(APIView):\n    def get(self, request, id):\n        if FloorplanPoints.objects.filter(plan=id).exists():\n            points = FloorplanPoints.objects.get(plan=id)\n            serializer = FloorplanPointsSerializer(points, many=False)\n            return JsonResponse(serializer.data, safe=False)\n        else:\n            return JsonResponse(\n                \"No item\", safe=False, status=status.HTTP_400_BAD_REQUEST\n            )",
         "detail": "back.api.views",
         "documentation": {}
     },
diff --git a/admin_front/components/FloorplanSvg.vue b/admin_front/components/FloorplanSvg.vue
index da75b7e..a2159b3 100644
--- a/admin_front/components/FloorplanSvg.vue
+++ b/admin_front/components/FloorplanSvg.vue
@@ -87,7 +87,7 @@ const sampling_data = async () => {
                 .attr('class', _class)
                 .on('click', clickFunk)
         }
-        if (i % 10 == 0) {
+        if (i % 200 == 0) {
             await nextFrame()
         }
     };
diff --git a/admin_front/pages/plan/index.vue b/admin_front/pages/plan/index.vue
index 3281284..84d46ae 100644
--- a/admin_front/pages/plan/index.vue
+++ b/admin_front/pages/plan/index.vue
@@ -34,11 +34,16 @@ const dataToState = async (data: any) => {
 
     try {
         const res = await fetch(`${config.public.apiBase}/api/floorplan/${data.id}/points`)
+        if (res.status !== 200) {
+            throw new Error()
+        }
         const points = await res.json()
         target_points.value = points.points
         target_array.value = points.points
     } catch (error) {
         console.log(error)
+        target_points.value = []
+        target_array.value = []
     }
 }
 
@@ -54,6 +59,9 @@ const selectFileEvent = async () => {
     loadingFile.value = true
     try {
         const res = await fetch(`${config.public.apiBase}/api/floorplan/${selectFile.value}`)
+        if (res.status !== 200) {
+            throw new Error()
+        }
         const data = await res.json()
         await dataToState(data)
     } catch (error) {
@@ -66,6 +74,9 @@ const loadFiles = async () => {
     try {
         loadingFile.value = true
         const res = await fetch(`${config.public.apiBase}/api/floorplan/`)
+        if (res.status !== 200) {
+            throw new Error()
+        }
         const data = await res.json()
         files.value = data
     } catch (error) {
diff --git a/back/api/views.py b/back/api/views.py
index db773cd..bf3f1b6 100644
--- a/back/api/views.py
+++ b/back/api/views.py
@@ -1,9 +1,13 @@
 import json
 from rest_framework.parsers import JSONParser, MultiPartParser
 from rest_framework.views import APIView
+from rest_framework import status
+
 from django.http import JsonResponse
+from django.shortcuts import get_object_or_404
 
 from api.tracer import parse_image, read_image, numpy_zip_str_to_arr
+
 from .serializers import (
     FloorplanListSerializer,
     FloorplanPointsSerializer,
@@ -66,7 +70,7 @@ class FloorplanView(APIView):
                 )
             else:
                 logger.info(serializer.errors)
-            return JsonResponse(serializer.errors, status=500)
+            return JsonResponse(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
         except Exception as e:
             logger.error(e)
             raise e
@@ -94,11 +98,14 @@ class FloorplanView(APIView):
                 serializer = FloorplanSerializer(item, data=request.data, partial=True)
                 if serializer.is_valid():
                     serializer.save()
-                    return JsonResponse(serializer.data, status=201)
+                    return JsonResponse(serializer.data, status=status.HTTP_200_OK)
                 else:
                     logger.info(serializer.errors)
+                    return JsonResponse(
+                        serializer.errors, status=status.HTTP_400_BAD_REQUEST
+                    )
             else:
-                return JsonResponse("No item", status=400)
+                return JsonResponse("No item", status=status.HTTP_400_BAD_REQUEST)
         except Exception as e:
             logger.error(e)
             raise e
@@ -111,12 +118,17 @@ class FloorplanPointsView(APIView):
             serializer = FloorplanPointsSerializer(points, many=False)
             return JsonResponse(serializer.data, safe=False)
         else:
-            return JsonResponse("No item", status=400)
+            return JsonResponse(
+                "No item", safe=False, status=status.HTTP_400_BAD_REQUEST
+            )
 
     def post(self, request, id):
         data = JSONParser().parse(request)
         data["plan"] = id
-        serializer = FloorplanPointsSerializer(data=data)
+        floorplapoints_object = get_object_or_404(FloorplanPoints, plan=id)
+        serializer = FloorplanPointsSerializer(floorplapoints_object, data=data, partial=True)
         if serializer.is_valid():
             serializer.save()
-            return JsonResponse(serializer.data, status=201)
+            return JsonResponse(serializer.data, status=status.HTTP_201_CREATED)
+        else:
+            return JsonResponse(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
diff --git a/dev.sh b/dev.sh
new file mode 100755
index 0000000..b50541a
--- /dev/null
+++ b/dev.sh
@@ -0,0 +1,3 @@
+poetry run task admin_front_dev &
+poetry run task front_dev &
+poetry run task server
\ No newline at end of file