[Loris-dev] Error on data dictionary

[Eli Johnson]

Hi Dave,

I reverted to the v23.0.0 version of the datadict module and it's working
properly again.

I did inspect the returned values -- the json data package returned by
"<lorisurl>/datadict/?format=json" appears to be cut off. For some reason
it looks like ~40 newlines have been added before the json begins and then
an equivalent number of characters have been cut off from the end. I didn't
find any obvious issues when briefly inspecting the v23.0.8 changes to
php/datadict.class.inc but something there appears to be the source of the
issue.

Best,
Eli


Eli Johnson
Developer/Data Manager
Institute of Child Development
University of Minnesota
joh17964 at umn.edu


On Thu, Nov 11, 2021 at 8:24 AM Dave MacFarlane <dave.macfarlane at mcin.ca>
wrote:

> Hi Eli,
>
> I'm not sure why that would have broken between 2 bug fix releases, but
> the error "SyntaxError: Unexpected end of JSON input" implies that the
> attempt to fetch the fields returned invalid input. This can happen if, for
> instance, an exception is thrown by the ajax request. If you open the
> network tab* in your developer tools before loading the page there should
> be a request for "(your url)/datadict/fields". Click on that, and then the
> "Response" tab* in the network tools and you should get a better idea of
> what's being returned to debug.
>
> * That's how they're labeled in Firefox. I'm not sure off the top of my
> head what the labels are in Chrome but it should be similar.
>
> On Wed, Nov 10, 2021 at 2:29 PM Eli Johnson <joh17964 at umn.edu> wrote:
>
>> Hi,
>>
>> I am updating from LORIS v23.0.2 to v23.0.8 (running on RHEL7).
>> Everything is working except the data dictionary. I'm getting an error when
>> trying to load the data dictionary module. The data dictionary page
>> contains the text "An error occurred while loading the page", there is
>> nothing logged in the apache error-log, the browser console reports
>> "SyntaxError: Unexpected end of JSON input" on dataDictIndex.js:49.  I'm
>> not super familiar with react so I'm not sure how to find the source of the
>> error although it looks like it's occurring on *fetchData*. Any idea why
>> this would happen or suggestions on how to debug?
>>
>> Thanks,
>> Eli
>>
>> Eli Johnson
>> Developer/Data Manager
>> Institute of Child Development
>> University of Minnesota
>> joh17964 at umn.edu
>> _______________________________________________
>> Loris-dev mailing list
>> Loris-dev at bic.mni.mcgill.ca
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>>
>
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