RE: PgAdmin 4 v.30 on WIN10

Hi,

Can you try renaming existing pgAdmin4.db to pgAdmin4.db_OLD which is located at C:\Users\<YourUsername>\AppData\Roaming\pgAdmin\

And try to start pgAdmin4 again.

On Wed, Jun 6, 2018 at 9:48 PM, Igor Neyman <ineyman@perceptron.com> wrote:

Hello,

 

After installing PgAdmin 4 v.30 on Windows 10 when Trying to start it, I’m getting “Fatal Error” message box:

 

“The application server could not be contacted”.

 

Here is the what’s in PgAdmin log file:

 

Traceback (most recent call last):

  File "D:/Postgres/10/v3/web/pgAdmin4.py", line 70, in <module>

    app = create_app()

  File "D:\Postgres\10\v3\web\pgadmin\__init__.py", line 315, in create_app

    db_upgrade(app)

  File "D:\Postgres\10\v3\web\pgadmin\setup\db_upgrade.py", line 25, in db_upgrade

    flask_migrate.upgrade(migration_folder)

  File "D:/Postgres/10/v3/venv/Lib/site-packages\flask_migrate\__init__.py", line 259, in upgrade

    command.upgrade(config, revision, sql=sql, tag=tag)

  File "D:/Postgres/10/v3/venv/Lib/site-packages\alembic\command.py", line 254, in upgrade

    script.run_env()

  File "D:/Postgres/10/v3/venv/Lib/site-packages\alembic\script\base.py", line 427, in run_env

    util.load_python_file(self.dir, 'env.py')

  File "D:/Postgres/10/v3/venv/Lib/site-packages\alembic\util\pyfiles.py", line 81, in load_python_file

    module = load_module_py(module_id, path)

  File "D:/Postgres/10/v3/venv/Lib/site-packages\alembic\util\compat.py", line 141, in load_module_py

    mod = imp.load_source(module_id, path, fp)

  File "D:\Postgres\10\v3\web\pgadmin\setup\..\..\migrations\env.py", line 94, in <module>

    run_migrations_online()

  File "D:\Postgres\10\v3\web\pgadmin\setup\..\..\migrations\env.py", line 87, in run_migrations_online

    context.run_migrations()

  File "<string>", line 8, in run_migrations

  File "D:/Postgres/10/v3/venv/Lib/site-packages\alembic\runtime\environment.py", line 836, in run_migrations

    self.get_context().run_migrations(**kw)

  File "D:/Postgres/10/v3/venv/Lib/site-packages\alembic\runtime\migration.py", line 321, in run_migrations

    for step in self._migrations_fn(heads, self):

  File "D:/Postgres/10/v3/venv/Lib/site-packages\alembic\command.py", line 243, in upgrade

    return script._upgrade_revs(revision, rev)

  File "D:/Postgres/10/v3/venv/Lib/site-packages\alembic\script\base.py", line 340, in _upgrade_revs

    for script in reversed(list(revs))

  File "D:/Postgres/10/v3/venv\lib\contextlib.py", line 35, in __exit__

    self.gen.throw(type, value, traceback)

  File "D:/Postgres/10/v3/venv/Lib/site-packages\alembic\script\base.py", line 176, in _catch_revision_errors

    compat.raise_from_cause(util.CommandError(err.args[0]))

  File "D:/Postgres/10/v3/venv/Lib/site-packages\alembic\util\compat.py", line 205, in raise_from_cause

    reraise(type(exception), exception, tb=exc_tb)

  File "D:/Postgres/10/v3/venv/Lib/site-packages\alembic\script\base.py", line 143, in _catch_revision_errors

    yield

  File "D:/Postgres/10/v3/venv/Lib/site-packages\alembic\script\base.py", line 336, in _upgrade_revs

    revs = list(revs)

  File "D:/Postgres/10/v3/venv/Lib/site-packages\alembic\script\revision.py", line 698, in _iterate_revisions

    select_for_downgrade and requested_lowers

  File "D:/Postgres/10/v3/venv/Lib/site-packages\alembic\script\revision.py", line 694, in <genexpr>

    rev.revision for rev

  File "D:/Postgres/10/v3/venv/Lib/site-packages\alembic\script\revision.py", line 631, in _iterate_related_revisions

    ", ".join(r.revision for r in overlaps)

alembic.util.exc.CommandError: Requested revision fdc58d9bd449 overlaps with other requested revisions 02b9dccdcfcb

Exception KeyError: KeyError(8304,) in <module 'threading' from 'D:/Postgres/10/v3/venv\lib\threading.py'> ignored

 

Regards,

Igor Neyman

 

Thank you, that fixed it.

Regards,

Igor Neyman