Chained Fields Plugin not compatible with Trac 1.2?

[anonymous]

I recently updated trac to version 1.2. After that I noticed that the TracTicketChainedFieldsPlugin is no longer working. I tried to install/update to the latest version of the plugin and I got the following error, when I try to access the plugin's admin page:

Datei "/usr/lib/python2.7/dist-packages/trac/web/main.py", Zeile 613, in _dispatch_request
  dispatcher.dispatch(req)
Datei "/usr/lib/python2.7/dist-packages/trac/web/main.py", Zeile 253, in dispatch
  resp = chosen_handler.process_request(req)
Datei "/usr/lib/python2.7/dist-packages/trac/admin/web_ui.py", Zeile 108, in process_request
  provider.render_admin_panel(req, cat_id, panel_id, path_info)
Datei "build/bdist.linux-x86_64/egg/tcf/web_ui.py", Zeile 140, in render_admin_panel
  data["tcf_define"] = TracTicketChainedFields_List.get_tcf_define(self.env)
Datei "build/bdist.linux-x86_64/egg/tcf/model.py", Zeile 75, in get_tcf_define
  db = env.get_db_cnx()

Questions:

• Is it possible, that this plugin is no longer supported? If yes, a compatibility hint should be placed on the wiki page.
• Is there any alternative to get back the functionality of the plugin?

Systeminformationen
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0

Paket	Version
Trac	1.2
Babel	2.4.0
Docutils	0.14
Genshi	0.7 (with speedups)
mod_python	3.3.1
Pygments	2.2.0
pysqlite	2.6.0
Python	2.7.15rc1 (default, Nov 12 2018, 14:31:15) [GCC 7.3.0]
pytz	2018.3
setuptools	39.0.1
SQLite	3.22.0
Subversion	1.9.7 (r1800392)
jQuery	3.2.1
jQuery UI	1.12.1
jQuery Timepicker	1.2

[Ryan J Ollos]

In 17322:

1.2dev: Branch for Trac 1.2 support

Refs #13519.

[Ryan J Ollos]

In 17323:

1.2dev: Make compatible with Trac 1.2

Fixes #13519.