Update app.py

app.py

@@ -95,13 +95,13 @@ def check_session_validity(check_id):
                 # If time difference is small, block access (previous user just finished)
                 if time_diff <= timedelta(minutes=SESSION_TIMEOUT_MINUTES):
                     error_msg = (
-                        f"⚠️ The assistant is currently being used by another user \n\n"
-                        f"It was detected that another user accessed this assistant just {time_diff.total_seconds()/60:.1f} minutes ago."
-                        f"To protect the security of learning data and avoid conflicts, please try again later.\n\n"
-                        f"We recommend waiting {SESSION_TIMEOUT_MINUTES} minutes before trying again, or: \n"
-                        "1. Return to the Moodle course page\n"
-                        "2. Click the "AI Learning Assistant" link again\n"
-                        "3. The system will assign you a new assistant session\n\n"
+                        f"⚠️ The assistant is currently being used by another user \n\n",
+                        f"It was detected that another user accessed this assistant just {time_diff.total_seconds()/60:.1f} minutes ago.",
+                        f"To protect the security of learning data and avoid conflicts, please try again later.\n\n",
+                        f"We recommend waiting {SESSION_TIMEOUT_MINUTES} minutes before trying again, or: \n",
+                        "1. Return to the Moodle course page\n",
+                        "2. Click the "AI Learning Assistant" link again\n",
+                        "3. The system will assign you a new assistant session\n\n",
                         "If the problem persists, please contact your instructor.",
                     )
                     print(f"[check_session_validity] Blocking access - Previous user ({last_student_id}) used assistant {time_diff.total_seconds()/60:.1f} minutes ago")