I'm just following the [tutorial on bulk loading RDF](https://vos.openlinksw.com/owiki/wiki/VOS/VirtBulkRDFLoader), starting with the `ld_dir` command to generate my import table:
```
ld_dir ('/usr/share/proj/', 'PathwayCommons12.intact_complex.BIOPAX.owl', 'www.pathwaycommons.org');
```
Sanity check (it's definitely an RDF file):
```
root@20ff189f90b7:/usr/share/proj# head PathwayCommons12.intact_complex.BIOPAX.owl
<?xml version="1.0" encoding="UTF-8"?>
<rdf:RDF
 xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
 xmlns:owl="http://www.w3.org/2002/07/owl#"
 xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
 xmlns:bp="http://www.biopax.org/release/biopax-level3.owl#"
 xml:base="http://pathwaycommons.org/pc12/">
<owl:Ontology rdf:about="">
 <owl:imports rdf:resource="http://www.biopax.org/release/biopax-level3.owl#" />
</owl:Ontology>
root@20ff189f90b7:/usr/share/proj#
```

Despite this, after running the `ld_dir()` command above I get an uninformative error: [please see imgur screenshot](https://imgur.com/a/wTQtm2L).


bulk loading RDF gives uninformative error
This is a GitHub Issue
repo:virtuoso-opensource
owner:openlink
Title : bulk loading RDF gives uninformative error
Issue date:

--- start body ---
I'm just following the [tutorial on bulk loading RDF](https://vos.openlinksw.com/owiki/wiki/VOS/VirtBulkRDFLoader), starting with the `ld_dir` command to generate my import table:
```
ld_dir ('/usr/share/proj/', 'PathwayCommons12.intact_complex.BIOPAX.owl', 'www.pathwaycommons.org');
```
Sanity check (it's definitely an RDF file):
```
root@20ff189f90b7:/usr/share/proj# head PathwayCommons12.intact_complex.BIOPAX.owl
<?xml version="1.0" encoding="UTF-8"?>
<rdf:RDF
 xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
 xmlns:owl="http://www.w3.org/2002/07/owl#"
 xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
 xmlns:bp="http://www.biopax.org/release/biopax-level3.owl#"
 xml:base="http://pathwaycommons.org/pc12/">
<owl:Ontology rdf:about="">
 <owl:imports rdf:resource="http://www.biopax.org/release/biopax-level3.owl#" />
</owl:Ontology>
root@20ff189f90b7:/usr/share/proj#
```

Despite this, after running the `ld_dir()` command above I get an uninformative error: [please see imgur screenshot](https://imgur.com/a/wTQtm2L).


--- end body ---
