diff --git a/backend/app/controllers/step_subtask.py b/backend/app/controllers/step_subtask.py
index f664ae76..b8aa464a 100644
--- a/backend/app/controllers/step_subtask.py
+++ b/backend/app/controllers/step_subtask.py
@@ -40,7 +40,7 @@ def analysis():
     appBasePrompt, _ = getServiceBasePrompt(req["app_id"], serviceName)
     projectInfo, _ = getServiceIntro(req["app_id"], serviceName)
     projectLib, _ = getServiceLib(req["app_id"], serviceName)
-    serviceStruct,_ = getServiceStruct(req["app_id"], serviceName)
+    serviceStruct, _ = getServiceStruct(req["app_id"], serviceName)
 
     filesToEdit, success = splitTask(requirementID, newfeature, serviceName, appBasePrompt, projectInfo, projectLib, serviceStruct, req["app_id"])
 
diff --git a/backend/app/pkgs/knowledge/app_info.py b/backend/app/pkgs/knowledge/app_info.py
index dafe9dcb..55dbc861 100644
--- a/backend/app/pkgs/knowledge/app_info.py
+++ b/backend/app/pkgs/knowledge/app_info.py
@@ -37,14 +37,14 @@ def getServiceBasePrompt(appID, serviceName):
     apps = Application.get_all_application("", appID)
     if len(apps) > 0:
         services = apps[0]["service"]
-        serviceNameStr = ""
+        service_names = []
         currentServiceStr = ""
         for service in services:
-            serviceNameStr += service["name"]+","
+            service_names.append(service["name"])
             if service["name"] == serviceName:
                 currentServiceStr = "and you are responsible for the development of "+service["name"]+" services. The service uses the "+service["language"]+" language and is developed under the "+service["framework"]+" framework"
 
-        serviceNameStr = serviceNameStr.strip()
+        serviceNameStr = ','.join(service_names)
         appBasePrompt = "The application consists of "+serviceNameStr+" services, "+currentServiceStr
 
     return appBasePrompt, True
diff --git a/backend/app/pkgs/prompt/prompt.py b/backend/app/pkgs/prompt/prompt.py
index 2a22524a..dae2874e 100644
--- a/backend/app/pkgs/prompt/prompt.py
+++ b/backend/app/pkgs/prompt/prompt.py
@@ -32,7 +32,7 @@ def splitTask(requirementID, newfeature, serviceName, appBasePrompt, projectInfo
     else:
         if "java" in serviceName:
             obj = SubtaskJavaPro()
-        if "vue" in serviceName:
+        elif "vue" in serviceName:
             obj = SubtaskVuePro()
         else:
             obj = SubtaskPro()