SOAP request gives fatal error, identical query w/different value does not

[MateoLeFou]

I have two soap queries, one of which yields a "Looks like we got no XML" fatal error.

Code for both is:

pr("id ". $dealer_id);
pr("session() ". $this->session);

$response = $this->client->get_entry(
$this->session, 'Accounts',$dealer_id,$select_fields
);

Output is
id 2afa46fb-1fc1-a38c-667f-49be88fdd76f
session() bn6mrspar3s40dql3vliao46g5\
Fatal error: Uncaught SoapFault exception: [Client] looks like we got no XML document

For the other, it's
id 14f1471e-c05d-a717-5418-49762bc354a9
session() 0e39qajg9k6pmd4k67fpct9ie6

..and then the correct page and everything is fine

It still happens with different session values, so what's wrong with that first id?

[MateoLeFou]

hm... some more ids that fail in the same way
2afa46fb-1fc1-a38c-667f-49be88fdd76f
88300a10-f3c9-271d-3818-49be887dadf8
30b80df8-103e-6427-f7d7-49be886d69c0

and another that works
d0e00940-b713-f717-cdb6-49be88e5e1cc

what's the pattern?

[crmsiva]

Generally, the following error occurs due to the coding problem in the webservice/soap.

Fatal error: Uncaught SoapFault exception: [Client] looks like we got no XML document