I thank you for the suggestion. It is proving somewhat hard to 
(dis)confirm. I have made a testfile with just the word "test" pasted over 
and over again, with and without various formatting and with the same 
length or longer as the proper papers. This file consistently works. But 
when I attempt to do it with a regular research paper, it only works if I 
shorten it. Curiously, I can remove either half of the main text, or indeed 
sections here and there, randomly, and it works, but not with all of them 
present. I have combed it for special characters or tags, but cannot find 
any. 

mandag 27. februar 2023 kl. 13:49:58 UTC+1 skrev Bernardo C. D. A. 
Vasconcelos:

> I do not know the answer to this problem in particular, but perhaps it is 
> worth checking the main document *and* the bibliography for invisible 
> control characters (e.g. `\X{A0}`). They tend to cause all sorts of strange 
> problems that result in random error msgs.
>
> On Monday, February 27, 2023 at 8:16:20 AM UTC-3 Peter Vedal Utnes wrote:
>
>> We have a workflow in Open Journal Systems where we use Pandoc to convert 
>> word documents to EPUB, and then display them with an embedded EPUB app 
>> (Bibi). 
>>
>> Our resulting EPUBs work fine with both debuggers and viewers like 
>> calibre. They work in Bibi, but only when they are reduced to a certain 
>> length. Whenever the files exceed approx 100 lines or 600 words, Bibi 
>> claims:
>>
>> TypeError: Cannot read properties of undefined (reading ‘getAttribute’)
>>
>> Meanwhile, the same documents works when converted to EPUB using other 
>> converters, or when I reduce the length (length, not size in bytes-- I've 
>> tried with graphics, still works). It suddenly works when I reduce the 
>> length by removing pure paragraph text, even though all the formatted 
>> elements (abstract, references, etc) are the same. 
>>
>> I recognize that this problem is very specific to the interrelation 
>> pandoc <-> Bibi, but I'd be grateful for general troubleshooting 
>> suggestions. 
>>
>> Thanks in advance, 
>>
>> Peter
>>
>>

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