assign user id none bug fix

app.py

@@ -546,7 +546,7 @@ def update_paragraph_correct_grammatical_spelling_errors_input(paragraph):
 
 def generate_refine_paragraph(model, sys_content, eng_level, paragraph, user_refine_paragraph_prompt):
     """
-    根据用户输入的段落，调用OpenAI API生成相关的段落改善建议。
+    根据用户输入的段落，调用OpenAI API生成相关的段落改善建議。
     """
     user_content = f"""
         eng_level is: {eng_level}

assignment_service.py

@@ -110,6 +110,9 @@ class AssignmentService:
         return assignment_data["submission_ids"]
 
     def get_user_assignments(self, user_id):
+        if user_id is None or user_id == "":
+            raise gr.Error("出現錯誤，請重新整理畫面")
+
         try:
             encoded_user_id_url = urllib.parse.quote(user_id, safe='')
             user_assignments_json = self.gcs_service.download_as_string(self.bucket_name, f"users/{encoded_user_id_url}/assignments.json")

assignment_ui.py

@@ -316,7 +316,7 @@ def create_assignment_ui(user_data, user_email, user_nickname, assignment_servic
 
                 html_parts.append(f"""
                             <div style="margin-bottom: 20px;">
-                                <div style="font-weight: bold; color: #6610f2; margin-bottom: 5px;">🔄 段落改善建议 輸入</div>
+                                <div style="font-weight: bold; color: #6610f2; margin-bottom: 5px;">🔄 段落改善建議 輸入</div>
                                 <div style="background-color: #f8f9fa; padding: 10px 15px; border-radius: 5px; white-space: pre-wrap;">{content.get('chinese_full_paragraph_refine_input', '未提供')}</div>
                             </div>