Update app.py

app.py

@@ -5,6 +5,7 @@ import subprocess
 import spaces
 
 OLLAMA = os.path.expanduser("~/ollama")
+process = ""
 
 if not os.path.exists(OLLAMA):
     subprocess.run("curl -L https://ollama.com/download/ollama-linux-amd64 -o ~/ollama", shell=True)
@@ -19,6 +20,7 @@ OLLAMA_SERVICE_THREAD = threading.Thread(target=ollama_service_thread)
 # OLLAMA_SERVICE_THREAD.start()
 
 def terminate():
+    global process
     if process:
         os.killpg(os.getpgid(process.pid), signal.SIGTERM)
     OLLAMA_SERVICE_THREAD.join()