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app.py

@@ -15,11 +15,23 @@ from components.verification_result import format_verification_results
 class SpacesSettings:
     def __init__(self):
         # For Spaces deployment, we'll use environment variables
-        self.API_BASE_URL = os.getenv("API_BASE_URL", "https://your-backend-api.com")
+        self.API_BASE_URL = os.getenv("API_BASE_URL")
+        if not self.API_BASE_URL:
+            raise ValueError("API_BASE_URL environment variable is required")
         self.API_ENDPOINT = f"{self.API_BASE_URL}/api/verify"
         self.HEALTH_ENDPOINT = f"{self.API_BASE_URL}/api/health"
 
-settings = SpacesSettings()
+# Initialize settings with error handling
+try:
+    settings = SpacesSettings()
+except ValueError as e:
+    # Create a dummy settings object for graceful degradation
+    class DummySettings:
+        API_BASE_URL = None
+        API_ENDPOINT = None
+        HEALTH_ENDPOINT = None
+    settings = DummySettings()
+    print(f"Warning: {e}")
 
 # Simple API client for Spaces
 class SimpleAPIClient:
@@ -91,6 +103,17 @@ def verify_news_with_trial_check(input_text: str, request: gr.Request) -> str:
     if not input_text.strip():
         return "Please enter some text or URL to verify"
     
+    # Check if API_BASE_URL is configured
+    if not settings.API_BASE_URL:
+        return """
+        <div style="background: #f8d7da; border: 1px solid #f5c6cb; padding: 1rem; margin: 1rem 0; border-radius: 4px;">
+            <p style="margin: 0; color: #721c24; font-size: 0.9rem;">
+                ⚠️ <strong>Configuration Error:</strong> API_BASE_URL environment variable is not set. 
+                Please configure it in the Space settings.
+            </p>
+        </div>
+        """
+    
     try:
         # Get session ID for trial tracking
         session_id = get_session_id(request)