AttributeError：“NoneType”對像沒有屬性“值”-pgAdmin4

我 Ctrl+C 退出了最初的 pgAdmin4 設置。python pgAdmin4.py現在，如果我嘗試重新執行安裝，我會遇到大量錯誤。我現在正在使用 pgAdmin3，但我想知道如何解決這個問題。完整的回溯如下：

Traceback (most recent call last):
File "pgAdmin4.py", line 37, in <module>
   app = create_app()
File "/home/sean/.virtualenvs/pgadmin/lib/python2.7/site-packages/pgadmin4/pgadmin/__init__.py", line 244, in create_app
   db_upgrade(app)
File "/home/sean/.virtualenvs/pgadmin/lib/python2.7/site-packages/pgadmin4/pgadmin/setup/db_upgrade.py", line 25, in db_upgrade
   flask_migrate.upgrade(migration_folder)
File "/home/sean/.virtualenvs/pgadmin/local/lib/python2.7/site-packages/flask_migrate/__init__.py", line 244, in upgrade
   command.upgrade(config, revision, sql=sql, tag=tag)
File "/home/sean/.virtualenvs/pgadmin/local/lib/python2.7/site-packages/alembic/command.py", line 254, in upgrade
   script.run_env()
File "/home/sean/.virtualenvs/pgadmin/local/lib/python2.7/site-packages/alembic/script/base.py", line 421, in run_env
   util.load_python_file(self.dir, 'env.py')
File "/home/sean/.virtualenvs/pgadmin/local/lib/python2.7/site-packages/alembic/util/pyfiles.py", line 93, in load_python_file
   module = load_module_py(module_id, path)
File "/home/sean/.virtualenvs/pgadmin/local/lib/python2.7/site-packages/alembic/util/compat.py", line 75, in load_module_py
   mod = imp.load_source(module_id, path, fp)
File "/home/sean/.virtualenvs/pgadmin/lib/python2.7/site-packages/pgadmin4/pgadmin/setup/../../migrations/env.py", line 94, in <module>
   run_migrations_online()
File "/home/sean/.virtualenvs/pgadmin/lib/python2.7/site-packages/pgadmin4/pgadmin/setup/../../migrations/env.py", line 87, in run_migrations_online
   context.run_migrations()
File "<string>", line 8, in run_migrations
File "/home/sean/.virtualenvs/pgadmin/local/lib/python2.7/site-packages/alembic/runtime/environment.py", line 817, in run_migrations
   self.get_context().run_migrations(**kw)
File "/home/sean/.virtualenvs/pgadmin/local/lib/python2.7/site-packages/alembic/runtime/migration.py", line 329, in run_migrations
   step.migration_fn(**kw)
File "/home/sean/.virtualenvs/pgadmin/lib/python2.7/site-packages/pgadmin4/migrations/versions/fdc58d9bd449_.py", line 34, in upgrade
   if get_version() != -1:
File "/home/sean/.virtualenvs/pgadmin/lib/python2.7/site-packages/pgadmin4/pgadmin/setup/db_version.py", line 21, in get_version
   if int(version.value) > int(config.SETTINGS_SCHEMA_VERSION):
AttributeError: 'NoneType' object has no attribute 'value'

我執行了相同的步驟並遇到了同樣的問題。我發現通過刪除 ~/.pgadmin 目錄（在安裝過程中創建）然後重新執行“python pgAdmin4.py”解決了問題

我想提供另一個相同的可能答案。

像 OP 一樣，我從設置中按 CTRL+C 並在重新啟動設置後開始出現相同的異常。

  if int(version.value) > int(config.SETTINGS_SCHEMA_VERSION):
AttributeError: 'NoneType' object has no attribute 'value'

就我而言，我config_local.py在 default 旁邊有一個config.py. 其中一條是：

SQLITE_PATH = '/opt/pgadmin4/pgadmin4.db'

刪除指向的文件的解決方案SQLITE_PATH。

引用自：https://dba.stackexchange.com/questions/176413