Yaml is installed and the old code runs as soon as the error is reported
YAMLLoadWarning: calling yaml.load() without Loader=… is deprecated, as the default Loader is unsafe. Please read https://msg.pyyaml.org/load for full details .

solve

You don’t need to change a lot of code and add a sentence. Just yaml.load(list, Loader=yaml.FullLoader) add Loader=yaml.FullLoader. But there are more usages. See below

Then no more errors