API Wikipedia Warnings


I display the wiki extract on my site.
It worked well but for some time, the extract appears only for a part of requests.
The message returned is:

"HTML may be malformed and / or unbalanced and may be omitted inline images.Use: http://www.mediawiki.org/wiki/Extension:TextExtracts#Caveats."

Here is a request that returns this message:

And another request, the extract is displayed well (but the warning is present):

Thanks for your help.

all you need is the json object values right? i dont see much issue here.