Bug 51225 – Error message "Die Anfrage enthält keine Schule"

Bug 51225 - Error message "Die Anfrage enthält keine Schule"


Summary:	Error message "Die Anfrage enthält keine Schule"

Status:	NEW

Product:	UCS@school
Classification:	Unclassified
Component:	UMC - Exam mode
Version:	UCS@school 4.4
Hardware:	Other Linux

Importance:	P5 normal (vote)
Target Milestone:	---
Assigned To:	UCS@school maintainers
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Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2020-05-05 15:34 CEST by Sönke Schwardt-Krummrich
Modified:	2020-05-05 15:45 CEST (History)
CC List:	1 user (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?:	2: Will only affect a few installed domains
How will those affected feel about the bug?:	4: A User would return the product
User Pain:	0.229
Enterprise Customer affected?:
School Customer affected?:
ISV affected?:
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Attachments
Error message (76.52 KB, image/png) 2020-05-05 15:34 CEST, Sönke Schwardt-Krummrich	Details
HTTP/UMCP Request (90.40 KB, image/png) 2020-05-05 15:35 CEST, Sönke Schwardt-Krummrich	Details
HTTP/UMCP Request Arguments (58.07 KB, image/png) 2020-05-05 15:35 CEST, Sönke Schwardt-Krummrich	Details
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Description Sönke Schwardt-Krummrich

2020-05-05 15:34:47 CEST

Created attachment 10344 [details]
Error message

During a QA session, I was not able to create a new exam. When searching for classes to select the exam participants, the attached error message was shown.
As long as the browser session existed, this was reproducible.

It looks like the UMCP command schoolexam/groups has not been called correctly by the browser (argument school was empty) → see screenshots.

Therefore the error from the backend was correct.

Comment 1 Sönke Schwardt-Krummrich

2020-05-05 15:35:16 CEST

Created attachment 10345 [details]
HTTP/UMCP Request

Comment 2 Sönke Schwardt-Krummrich

2020-05-05 15:35:46 CEST

Created attachment 10346 [details]
HTTP/UMCP Request Arguments

Comment 3 Sönke Schwardt-Krummrich

2020-05-05 15:37:36 CEST

Tested with UCS@school 4.4v5. This was still reproducible after a UMC server restart. But after reloading the UMC in the browser, the problem was gone.

Comment 4 Florian Best

2020-05-05 15:45:46 CEST

It's most often a race condition in the javascript files, which produces this.
Wrong deferred handling, etc.