Bug 43896 – TypeError: cannot concatenate 'str' and 'NoneType' objects

Bug 43896 - TypeError: cannot concatenate 'str' and 'NoneType' objects


Summary:	TypeError: cannot concatenate 'str' and 'NoneType' objects

Status:	CLOSED FIXED

Product:	UCS
Classification:	Unclassified
Component:	App Center
Version:	UCS 4.2
Hardware:	Other Linux

Importance:	P5 normal (vote)
Target Milestone:	UCS 4.2-1-errata
Assigned To:	Johannes Keiser
QA Contact:	Florian Best

URL:
Keywords:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2017-03-16 08:49 CET by Stefan Gohmann
Modified:	2017-07-13 15:37 CEST (History)
CC List:	2 users (show)

See Also:
What kind of report is it?:	Bug Report
What type of bug is this?:	5: Major Usability: Impairs usability in key scenarios
Who will be affected by this bug?:	3: Will affect average number of installed domains
How will those affected feel about the bug?:	1: Nuisance – not a big deal but noticeable
User Pain:	0.086
Enterprise Customer affected?:
School Customer affected?:
ISV affected?:
Waiting Support:
Flags outvoted (downgraded) after PO Review:
Ticket number:
Bug group (optional):	Error handling, Troubleshooting, Usability
Max CVSS v3 score:

Flags:	best: Patch_Available+

Attachments
patch (801 bytes, patch) 2017-03-16 12:28 CET, Florian Best	Details \| Diff
View All Add an attachment (proposed patch, testcase, etc.)

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Description Stefan Gohmann

2017-03-16 08:49:48 CET

I see this traceback sometimes during the App installation:

 File: /usr/share/univention-management-console/i18n/de/apps.mo
 Traceback (most recent call last):
   File "<stdin>", line 51, in <module>
   File "/usr/lib/python2.7/dist-packages/polib.py", line 544, in to_binary
     msgid += self._encode(e.msgid)
 TypeError: cannot concatenate 'str' and 'NoneType' objects
 File: /etc/apt/apt.conf.d/55user_agent
 Executing interface update_available for amfn8m5vqt

Comment 1 Florian Best

2017-03-16 12:28:49 CET

Created attachment 8556 [details]
patch

Comment 2 Johannes Keiser

2017-07-05 13:09:48 CEST

(In reply to Florian Best from comment #1)
> Created attachment 8556 [details]
> patch

Applied patch:

r 80857
univention-appcenter (6.0.8-5) 
* Bug #43896: Applied patch from Florian Best - Prevent error in apps.mo
when 'name' or 'description' attribute is not set.

YAML: r 80858

Comment 3 Florian Best

2017-07-06 10:22:56 CEST

OK: translations are still generated
OK: empty msgid causes the translation not to be in the .mo file and therefore english is used
OK: YAML

Comment 4 Janek Walkenhorst

2017-07-13 15:37:52 CEST

<http://errata.software-univention.de/ucs/4.2/96.html>