On start Deluge shows the message "Only thin mode is available due to unknown import Error. To use Standalone mode, please see logs for error details." with question "Continue in Thin Client mode?"
The terminal output is the following:
```
$ deluge-gtk
Unable to initialize gettext/locale!
'ngettext'
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/deluge/i18n/util.py", line 118, in setup_translation
builtins.__dict__['_n'] = builtins.__dict__['ngettext']
KeyError: 'ngettext'
Unhandled error in Deferred:
Temporarily disabling observer LegacyLogObserverWrapper(<bound method TwistedLoggingObserver.emit of <deluge.log.TwistedLoggingObserver object at 0x7f77188f2730>>) due to exception: [Failure instance: Traceback: <class 'TypeError'>: _findCaller() takes from 1 to 2 positional arguments but 3 were given
/usr/lib/python3/dist-packages/twisted/internet/defer.py:1418:_inlineCallbacks
/usr/lib/python3/dist-packages/twisted/internet/defer.py:953:__del__
/usr/lib/python3/dist-packages/twisted/logger/_logger.py:270:critical
/usr/lib/python3/dist-packages/twisted/logger/_logger.py:144:emit
--- <exception caught here> ---
/usr/lib/python3/dist-packages/twisted/logger/_observer.py:131:__call__
/usr/lib/python3/dist-packages/twisted/logger/_legacy.py:93:__call__
/usr/lib/python3/dist-packages/deluge/log.py:208:emit
/usr/lib/python3/dist-packages/twisted/python/log.py:595:emit
/usr/lib/python3/dist-packages/twisted/logger/_legacy.py:154:publishToNewObserver
/usr/lib/python3/dist-packages/twisted/logger/_stdlib.py:115:__call__
/usr/lib/python3.8/logging/__init__.py:1500:log
/usr/lib/python3.8/logging/__init__.py:1565:_log
]
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1418, in _inlineCallbacks
result = g.send(result)
File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 953, in __del__
log.critical("Unhandled error in Deferred:",
File "/usr/lib/python3/dist-packages/twisted/logger/_logger.py", line 270, in critical
self.emit(LogLevel.critical, format, **kwargs)
File "/usr/lib/python3/dist-packages/twisted/logger/_logger.py", line 144, in emit
self.observer(event)
--- <exception caught here> ---
File "/usr/lib/python3/dist-packages/twisted/logger/_observer.py", line 131, in __call__
observer(event)
File "/usr/lib/python3/dist-packages/twisted/logger/_legacy.py", line 93, in __call__
self.legacyObserver(event)
File "/usr/lib/python3/dist-packages/deluge/log.py", line 208, in emit
PythonLoggingObserver.emit(self, event_dict)
File "/usr/lib/python3/dist-packages/twisted/python/log.py", line 595, in emit
_publishNew(self._newObserver, eventDict, textFromEventDict)
File "/usr/lib/python3/dist-packages/twisted/logger/_legacy.py", line 154, in publishToNewObserver
observer(eventDict)
File "/usr/lib/python3/dist-packages/twisted/logger/_stdlib.py", line 115, in __call__
self.logger.log(
File "/usr/lib/python3.8/logging/__init__.py", line 1500, in log
self._log(level, msg, args, **kwargs)
File "/usr/lib/python3.8/logging/__init__.py", line 1565, in _log
fn, lno, func, sinfo = self.findCaller(stack_info, stacklevel)
builtins.TypeError: _findCaller() takes from 1 to 2 positional arguments but 3 were given
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/deluge/log.py", line 87, in exception
yield LoggingLoggerClass.exception(self, msg, *args, **kwargs)
File "/usr/lib/python3.8/logging/__init__.py", line 1469, in exception
self.error(msg, *args, exc_info=exc_info, **kwargs)
File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1613, in unwindGenerator
return _cancellableInlineCallbacks(gen)
File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1529, in _cancellableInlineCallbacks
_inlineCallbacks(None, g, status)
--- <exception caught here> ---
File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1418, in _inlineCallbacks
result = g.send(result)
File "/usr/lib/python3/dist-packages/deluge/log.py", line 79, in error
yield LoggingLoggerClass.error(self, msg, *args, **kwargs)
File "/usr/lib/python3.8/logging/__init__.py", line 1463, in error
self._log(ERROR, msg, args, **kwargs)
File "/usr/lib/python3.8/logging/__init__.py", line 1565, in _log
fn, lno, func, sinfo = self.findCaller(stack_info, stacklevel)
builtins.TypeError: findCaller() takes from 1 to 2 positional arguments but 3 were given
Temporarily disabling observer LegacyLogObserverWrapper(<bound method TwistedLoggingObserver.emit of <deluge.log.TwistedLoggingObserver object at 0x7f77188f2730>>) due to exception: [Failure instance: Traceback: <class 'TypeError'>: findCaller() takes from 1 to 2 positional arguments but 3 were given
/usr/lib/python3/dist-packages/twisted/internet/defer.py:1418:_inlineCallbacks
/usr/lib/python3/dist-packages/twisted/internet/defer.py:962:__del__
/usr/lib/python3/dist-packages/twisted/logger/_logger.py:190:failure
/usr/lib/python3/dist-packages/twisted/logger/_logger.py:144:emit
--- <exception caught here> ---
/usr/lib/python3/dist-packages/twisted/logger/_observer.py:131:__call__
/usr/lib/python3/dist-packages/twisted/logger/_legacy.py:93:__call__
/usr/lib/python3/dist-packages/deluge/log.py:204:emit
/usr/lib/python3.8/logging/__init__.py:1481:critical
/usr/lib/python3.8/logging/__init__.py:1565:_log
]
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1418, in _inlineCallbacks
result = g.send(result)
File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 962, in __del__
log.failure(format,
File "/usr/lib/python3/dist-packages/twisted/logger/_logger.py", line 190, in failure
self.emit(level, format, log_failure=failure, **kwargs)
File "/usr/lib/python3/dist-packages/twisted/logger/_logger.py", line 144, in emit
self.observer(event)
--- <exception caught here> ---
File "/usr/lib/python3/dist-packages/twisted/logger/_observer.py", line 131, in __call__
observer(event)
File "/usr/lib/python3/dist-packages/twisted/logger/_legacy.py", line 93, in __call__
self.legacyObserver(event)
File "/usr/lib/python3/dist-packages/deluge/log.py", line 204, in emit
getattr(LoggingLoggerClass, event_dict['log_level'].name)(
File "/usr/lib/python3.8/logging/__init__.py", line 1481, in critical
self._log(CRITICAL, msg, args, **kwargs)
File "/usr/lib/python3.8/logging/__init__.py", line 1565, in _log
fn, lno, func, sinfo = self.findCaller(stack_info, stacklevel)
builtins.TypeError: findCaller() takes from 1 to 2 positional arguments but 3 were given
```
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: deluge-gtk 2.0.3-2
ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
Uname: Linux 5.4.0-26-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: MATE
Date: Tue May 5 19:31:37 2020
InstallationDate: Installed on 2020-04-23 (11 days ago)
InstallationMedia: Ubuntu-MATE 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
PackageArchitecture: all
SourcePackage: deluge
UpgradeStatus: No upgrade log present (probably fresh install)
Status changed to 'Confirmed' because the bug affects multiple users.