ValueError: env prometheus_multiproc_dir is not set or not a directory

[kingback2019]

我在运行ip代理的时候，执行python main.py出现了如下错误
，非常感谢大佬可以帮助

[mikeck1]

Same issue from following README instructions.

Line 4: # Set env before import client
Line 5: os.environ['prometheus_multiproc_dir'] = Config.PROMETHEUS_DIR