proxypool | Traceback (most recent call last): proxypool | File "run.py", line 1, in <module> proxypool | from proxypool.scheduler import Scheduler proxypool | File "/app/proxypool/scheduler.py", line 3, in <module> proxypool | from proxypool.processors.server import app proxypool | File "/app/proxypool/processors/server.py", line 1, in <module> proxypool | from flask import Flask, g proxypool | File "/root/.local/lib/python3.7/site-packages/flask/__init__.py", line 19, in <module> proxypool | from . import json proxypool | File "/root/.local/lib/python3.7/site-packages/flask/json/__init__.py", line 15, in <module> proxypool | from itsdangerous import json as _json proxypool | ImportError: cannot import name 'json' from 'itsdangerous' (/root/.local/lib/python3.7/site-packages/itsdangerous/__init__.py)