AttributeError: can't set attribute

[wlfsbn]

How to Reproduce

While doing a GET operation on /versions, Trac issued an internal error.

(please provide additional details here)

I am using Trac as a stand-alone instance on a Macbook. I did not do anything specific, per se, to reproduce this issue. I just installed the plugin and enabled it. After enabling it in the trac.ini I upgraded trac database, the wiki, logged out of Trac UI, and killed the trac instance to bring it up once again. After the instance was back up again, I clicked on the "Versions" tab, and this error was reported on the tab.

This does look very similar to 13206 but 13206 is closed, hence opened a new ticket for this.

Python Traceback:

Most recent call last:

File "/Users/anurag.sarathy/Projects/Trac/Trac-environments/TracEnv1/plugins/lib/python2.7/site-packages/trac/web/main.py", line 639, in dispatch_request          
  dispatcher.dispatch(req)
File "/Users/anurag.sarathy/Projects/Trac/Trac-environments/TracEnv1/plugins/lib/python2.7/site-packages/trac/web/main.py", line 250, in dispatch          
  resp = chosen_handler.process_request(req)
File "/Users/anurag.sarathy/Projects/Trac/Trac-environments/TracEnv1/plugins/lib/python2.7/site-packages/ExtendedVersionPlugin-1.0.dev0-py2.7.egg/extendedversion/roadmap.py", line 59, in process_request          
  version.resource = resource

Request parameters:

{}

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:85.0) Gecko/20100101 Firefox/85.0

System Information

Trac	1.4.2
Babel	2.9.0
Docutils	0.16
Genshi	0.7.5 (with speedups)
Jinja2	2.11.2
Pygments	2.5.2
pysqlite	2.6.0
Python	2.7.18 (default, Jan 27 2021, 05:23:40) [GCC Apple LLVM 12.0.0 (clang-1200.0.32.28)]
pytz	2020.5
setuptools	44.1.1
SQLite	3.34.0
Textile	3.0.4
jQuery	1.12.4
jQuery UI	1.12.1
jQuery Timepicker	1.6.3

Enabled Plugins

ExtendedVersionPlugin	1.0.dev0
TracSimpleMultiProject	0.7.1
TracTags	0.11
TracWikiExtras	1.3.1

Interface Customization

shared-htdocs
shared-templates
site-htdocs	wolf.jpg
site-templates

Python Traceback

Traceback (most recent call last):
  File "/Users/anurag.sarathy/Projects/Trac/Trac-environments/TracEnv1/plugins/lib/python2.7/site-packages/trac/web/main.py", line 639, in dispatch_request
    dispatcher.dispatch(req)
  File "/Users/anurag.sarathy/Projects/Trac/Trac-environments/TracEnv1/plugins/lib/python2.7/site-packages/trac/web/main.py", line 250, in dispatch
    resp = chosen_handler.process_request(req)
  File "/Users/anurag.sarathy/Projects/Trac/Trac-environments/TracEnv1/plugins/lib/python2.7/site-packages/ExtendedVersionPlugin-1.0.dev0-py2.7.egg/extendedversion/roadmap.py", line 59, in process_request
    version.resource = resource
AttributeError: can't set attribute

[anonymous]

The resource attributed was added in ​milestone:1.3.2: ​r15844#file5. Should be an easy fix. Thanks for reporting.

[Ryan J Ollos]

In 17993:

TracExtendedVersion 1.0dev: Make compatible with 1.3.3+

The resource property was added to the Version class.

Fixes #13948.