Missing fulltext but flag positives

[lfoppiano]

While running appendFulltextTei, I've encountered this exception:

[ERROR] fr.inria.anhalytics.commons.managers.MongoFileManager: No corresponding fulltext TEI was found for BiblioObject{anhalyticsId=5b2b35c82d0eac1ef1ff03ad,metadataURL=https://hal.archives-ouvertes.fr/hal-01789422/tei,metadata=,teiCorpus=,doi=10.2516/ogst/2018004,publicationType=ART_Journal articles,isWithFulltext=true,domains=[ "phys_Physics [physics]"]}
fr.inria.anhalytics.commons.exceptions.DataException: java.lang.NullPointerException
	at fr.inria.anhalytics.commons.managers.MongoFileManager.getTei(MongoFileManager.java:329)
	at fr.inria.anhalytics.commons.managers.MongoFileManager.getGrobidTei(MongoFileManager.java:311)
	at fr.inria.anhalytics.harvest.teibuild.TeiBuilderWorker.run(TeiBuilderWorker.java:105)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NullPointerException
	at fr.inria.anhalytics.commons.managers.MongoFileManager.getTei(MongoFileManager.java:325)
	... 5 more

however the data in mongodb says otherwise (and the fulltext is in HAL):

> db.biblio_objects.findOne({anhalyticsId: '5b2b35c82d0eac1ef1ff03ad'})
{
	"_id" : ObjectId("5b2b35c82d0eac1ef1ff03ad"),
	"anhalyticsId" : "5b2b35c82d0eac1ef1ff03ad",
	"repositoryDocId" : "hal-01789422",
	"source" : "hal",
	"metadataURL" : "https://hal.archives-ouvertes.fr/hal-01789422/tei",
	"publicationType" : "ART_Journal articles",
	"repositoryDocVersion" : "v1",
	"doi" : "10.2516/ogst/2018004",
	"domains" : [
		"phys_Physics [physics]"
	],
	"isWithFulltext" : true,
	"isFulltextAppended" : true,
	"isProcessedPub2TEI" : true,
	"isMined" : false,
	"isIndexed" : false
}

Any idea where the issue might be?