Update app.py

app.py

@@ -22,17 +22,19 @@ import graphviz
 logging.basicConfig(level=logging.INFO)
 
 # Update PATH
-os.environ['PATH'] += ':/usr/bin'
+os.environ['PATH'] += ':/usr/bin:/usr/local/bin'
 
 # Check Graphviz installation
 try:
-    subprocess.run(['dot', '-V'], check=True, capture_output=True)
-    print("Graphviz is installed and accessible")
-except subprocess.CalledProcessError:
-    print("Error: Graphviz is not accessible")
+    result = subprocess.run(['dot', '-V'], check=True, capture_output=True, text=True)
+    print(f"Graphviz version: {result.stdout}")
+except subprocess.CalledProcessError as e:
+    print(f"Error running dot: {e}")
 except FileNotFoundError:
     print("Error: Graphviz (dot) is not found in PATH")
 
+print(f"Current PATH: {os.environ['PATH']}")
+
 openai.api_key = os.getenv("OPENAI_API_KEY")
 if not openai.api_key:
     logging.warning("OPENAI_API_KEY not set. GPT-3.5 model will not be available.")