change index url

launch.py

@@ -225,7 +225,7 @@ def run_extensions_installers(settings_file):
 def prepare_environment():
     global skip_install
 
-    torch_command = os.environ.get('TORCH_COMMAND', "pip install torch torchvision --extra-index-url https://download.pytorch.org/whl/cu118")
+    torch_command = os.environ.get('TORCH_COMMAND', "pip install torch torchvision --index-url https://download.pytorch.org/whl/cu118")
     requirements_file = os.environ.get('REQS_FILE', "requirements_versions.txt")
 
     xformers_package = os.environ.get('XFORMERS_PACKAGE', 'xformers==0.0.17')