>>! In T403671#11151068, @GrounderUK wrote:
> Since then, test evaluation details are quite often unavailable. For example, in [[https://www.wikifunctions.org/view/en/Z27983|decimal string from Rational, composition (Z27983)]], clicking “Details” in the first test (Z21788) does not display the details (and can make the content unscrollable on a mobile device, while leaving other interactions available). This failure recurs in edit mode, so there appears to be no way to see the error details.
>
> Reported by @99of9 on [[https://t.me/Wikifunctions/26527|Telegram]].
>>! In T403671#11152520, @Jdforrester-WMF wrote:
>>>! In T403671#11151068, @GrounderUK wrote:
>> Thanks for the fix!
>>
>> Since then, test evaluation details are quite often unavailable. For example, in [[https://www.wikifunctions.org/view/en/Z27983|decimal string from Rational, composition (Z27983)]], clicking “Details” in the first test (Z21788) does not display the details (and can make the content unscrollable on a mobile device, while leaving other interactions available). This failure recurs in edit mode, so there appears to be no way to see the error details.
>>
>> Reported by @99of9 on [[https://t.me/Wikifunctions/26527|Telegram]].
>
> Thanks, but this is a totally different issue. I'll file it.
In the JS console, this shows as throwing:
```
load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:65 TypeError: Cannot read properties of undefined (reading 'Z1K1')
at extractNestedErrors (load.php?debug=2&lang=en&modules=ext.wikilambda.app&skin=vector-2022&version=ztntf:9451:15)
at extractErrorData (load.php?debug=2&lang=en&modules=ext.wikilambda.app&skin=vector-2022&version=ztntf:9496:10)
at Proxy.getErrorSummary (load.php?debug=2&lang=en&modules=ext.wikilambda.app&skin=vector-2022&version=ztntf:26540:22)
at Proxy.compileSections (load.php?debug=2&lang=en&modules=ext.wikilambda.app&skin=vector-2022&version=ztntf:26467:54)
at Proxy.sections (load.php?debug=2&lang=en&modules=ext.wikilambda.app&skin=vector-2022&version=ztntf:26243:16)
at refreshComputed (load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:944:30)
at get value (load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2172:7)
at Object.get [as sections] (load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:5912:24)
at Object.get (load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:5479:21)
at Object.get (load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:5586:42)
app.config.errorHandler @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:65
callWithErrorHandling @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2608
handleError @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2655
renderComponentRoot @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:8852
componentUpdateFn @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:7739
run @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:789
runIfDirty @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:827
callWithErrorHandling @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2608
flushJobs @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2813
Promise.then
queueFlush @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2727
queueJob @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2722
effect.scheduler @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:7790
trigger @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:817
endBatch @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:875
trigger @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:1271
set @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:1554
set @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:5534
openMetricsDialog @ load.php?debug=2&lang=en&modules=ext.wikilambda.app&skin=vector-2022&version=ztntf:25313
callWithErrorHandling @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2608
callWithAsyncErrorHandling @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2615
emit @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:8700
emitTesterKeys @ load.php?debug=2&lang=en&modules=ext.wikilambda.app&skin=vector-2022&version=ztntf:25552
callWithErrorHandling @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2608
callWithAsyncErrorHandling @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2615
invoker @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:11405
```
… and:
```
load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:65 TypeError: Cannot read properties of undefined (reading 'parentElement')
at M (load.php?debug=2&lang=en&modules=ext.wikilambda.app&skin=vector-2022&version=ztntf:48755:2540)
at load.php?debug=2&lang=en&modules=ext.wikilambda.app&skin=vector-2022&version=ztntf:48755:3203
at Generator.next (<anonymous>)
at r (load.php?debug=2&lang=en&modules=ext.wikilambda.app&skin=vector-2022&version=ztntf:48755:125)
app.config.errorHandler @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:65
callWithErrorHandling @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2608
handleError @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2655
(anonymous) @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2618
Promise.catch
callWithAsyncErrorHandling @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2617
baseWatchOptions.call @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:8514
job @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2338
flushPreFlushCbs @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2761
updateComponentPreRender @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:7806
componentUpdateFn @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:7725
run @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:789
updateComponent @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:7600
processComponent @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:7535
patch @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:7053
componentUpdateFn @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:7748
run @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:789
updateComponent @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:7600
processComponent @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:7535
patch @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:7053
patchBlockChildren @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:7407
patchElement @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:7325
processElement @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:7184
patch @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:7041
patchBlockChildren @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:7407
processFragment @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:7485
patch @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:7027
patchBlockChildren @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:7407
patchElement @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:7325
processElement @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:7184
patch @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:7041
componentUpdateFn @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:7748
run @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:789
runIfDirty @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:827
callWithErrorHandling @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2608
flushJobs @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2813
Promise.then
queueFlush @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2727
queueJob @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2722
effect.scheduler @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:7790
trigger @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:817
endBatch @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:875
trigger @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:1271
set @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:1554
set @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:5534
openMetricsDialog @ load.php?debug=2&lang=en&modules=ext.wikilambda.app&skin=vector-2022&version=ztntf:25313
callWithErrorHandling @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2608
callWithAsyncErrorHandling @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2615
emit @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:8700
emitTesterKeys @ load.php?debug=2&lang=en&modules=ext.wikilambda.app&skin=vector-2022&version=ztntf:25552
callWithErrorHandling @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2608
callWithAsyncErrorHandling @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:2615
invoker @ load.php?debug=2&lang=en&modules=vue&skin=vector-2022&version=ztntf:11405
```