Errors upgrading an Taurus 3 Application to Taurus 5
I am tasked to update a Taurus 3 application to Taurus 5. Most of the app works after changing the attribute value access to the newer quantity-style of Taurus 4.
Nevertheless, I have several TaurusLabels and TaurusLineEdits that do not work and throw following errors on the console:
```
Exception ignored in: <function TangoAttribute.__del__ at 0x7e283ef68400>
Traceback (most recent call last):
File "/opt/xspecid-screens/venv/lib/python3.12/site-packages/taurus/core/tango/tangoattribute.py", line 367, in __del__
self.cleanUp()
File "/opt/xspecid-screens/venv/lib/python3.12/site-packages/taurus/core/tango/tangoattribute.py", line 371, in cleanUp
self._unsubscribeConfEvents()
File "/opt/xspecid-screens/venv/lib/python3.12/site-packages/taurus/core/tango/tangoattribute.py", line 902, in _unsubscribeConfEvents
if self.__cfg_evt_id is not None and self.__dev_hw_obj is not None:
^^^^^^^^^^^^^^^^^
File "/opt/xspecid-screens/venv/lib/python3.12/site-packages/taurus/core/tango/tangoattribute.py", line 381, in __getattr__
raise AttributeError("'TangoAttribute' object has no attribute %s" % name)
AttributeError: 'TangoAttribute' object has no attribute _TangoAttribute__cfg_evt_id
```
Does anyone have hints what is going on or how to debug the issue?
issue