Dear Archeslist,

we have extended the ARCHAEOLOGICAL HERITAGE (SITE).E27 Resource Type and 
defined our own vocabularies in the according Authority Files.

(After running install_arches_db.sh and build.sh), install_packages.sh 
loads all Authority Files. However the function 
create_link_to_entity_types() in authority_files.py aborts with the 
following error:

Traceback (most recent call last):
  File "../manage.py", line 28, in <module>
    execute_from_command_line(sys.argv)
  File 
"/arches-web/archesproject/virtualenv/ENV/local/lib/python2.7/site-packages/django/core/management/__init__.py",
 
line 399, in execute_from_command_line
    utility.execute()
  File 
"/arches-web/archesproject/virtualenv/ENV/local/lib/python2.7/site-packages/django/core/management/__init__.py",
 
line 392, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File 
"/arches-web/archesproject/virtualenv/ENV/local/lib/python2.7/site-packages/django/core/management/base.py",
 
line 242, in run_from_argv
    self.execute(*args, **options.__dict__)
  File 
"/arches-web/archesproject/virtualenv/ENV/local/lib/python2.7/site-packages/django/core/management/base.py",
 
line 285, in execute
    output = self.handle(*args, **options)
  File "/arches-web/archesproject/build/management/commands/packages.py", 
line 47, in handle
    self.load_package(package)
  File "/arches-web/archesproject/build/management/commands/packages.py", 
line 52, in load_package
    install(settings.ROOT_DIR)
  File "/arches-web/archesproject/packages/i3mainz/setup.py", line 60, in 
install
    authority_files.load_authority_files(package_settings.ROOT_DIR)
  File 
"/arches-web/archesproject/packages/i3mainz/install/authority_files.py", 
line 24, in load_authority_files
    create_link_to_entity_types(cursor, packagepath)
  File 
"/arches-web/archesproject/packages/i3mainz/install/authority_files.py", 
line 125, in create_link_to_entity_types
    entity_type = str(cursor.fetchone()[0])
TypeError: 'NoneType' object has no attribute '__getitem__'

Any ideas what the cause for this could be?

What does create_link_to_entity_types() / entity_type = 
str(cursor.fetchone()[0]) exactly do?

Best,
Tobias

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