when I use the 'ccm start' command, I encounter the following warning ! Why this error occurs ؟
/home/pc/.local/lib/python2.7/site-packages/ccmlib/cluster_factory.py:22: YAMLLoadWarning: calling yaml.load() without Loader=... is deprecated, as the default Loader is unsafe. Please read https://msg.pyyaml.org/load for full details.
/home/pc/.local/lib/python2.7/site-packages/ccmlib/node.py:143: YAMLLoadWarning: calling yaml.load() without Loader=... is deprecated, as the default Loader is unsafe. Please read https://msg.pyyaml.org/load for full details. data = yaml.load(f)