ubuntu – AttributeError：’NoneType’对象没有属性’value’ – pgAdmin4

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我从最初的pgAdmin4设置中按Ctrl C’d. python pgAdmin4.py现在,如果我尝试重新运行安装,我会遇到一大堆错误.我现在正在使用pgAdmin3,但我想知道如何解决这个问题.完整的追溯如下：

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'

解决方法:

我执行了相同的步骤并遇到了同样的问题.我发现通过删除?/ .pgadmin目录(在安装期间创建)然后重新运行“python pgAdmin4.py”来解决问题

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