I was unable to start the iSCSI service on anything higher than 12.0-Release until I not only disabled but deleted all authorized access groups. When I go to create a new one in 12.0-U1.1 I get the following error that appears to be SQL related.

Error: Traceback (most recent call last):
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/engine/base.py", line 1247, in _execute_context
self.dialect.do_execute(
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/engine/default.py", line 590, in do_execute
cursor.execute(statement, parameters)
sqlite3.IntegrityError: NOT NULL constraint failed: services_iscsitargetauthcredential.iscsi_target_auth_peersecret

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/usr/local/lib/python3.8/site-packages/middlewared/main.py", line 137, in call_method
result = await self.middleware._call(message['method'], serviceobj, methodobj, params, app=self,
File "/usr/local/lib/python3.8/site-packages/middlewared/main.py", line 1195, in _call
return await methodobj(*prepared_call.args)
File "/usr/local/lib/python3.8/site-packages/middlewared/service.py", line 455, in create
rv = await self.middleware._call(
File "/usr/local/lib/python3.8/site-packages/middlewared/main.py", line 1195, in _call
return await methodobj(*prepared_call.args)
File "/usr/local/lib/python3.8/site-packages/middlewared/schema.py", line 973, in nf
return await f(*args, **kwargs)
File "/usr/local/lib/python3.8/site-packages/middlewared/plugins/iscsi.py", line 333, in do_create
data['id'] = await self.middleware.call(
File "/usr/local/lib/python3.8/site-packages/middlewared/main.py", line 1238, in call
return await self._call(
File "/usr/local/lib/python3.8/site-packages/middlewared/main.py", line 1195, in _call
return await methodobj(*prepared_call.args)
File "/usr/local/lib/python3.8/site-packages/middlewared/schema.py", line 973, in nf
return await f(*args, **kwargs)
File "/usr/local/lib/python3.8/site-packages/middlewared/plugins/datastore/write.py", line 31, in insert
await self.middleware.call('datastore.execute_write', table.insert().values(**insert))
File "/usr/local/lib/python3.8/site-packages/middlewared/main.py", line 1238, in call
return await self._call(
File "/usr/local/lib/python3.8/site-packages/middlewared/main.py", line 1195, in _call
return await methodobj(*prepared_call.args)
File "/usr/local/lib/python3.8/site-packages/middlewared/plugins/datastore/connection.py", line 65, in execute_write
return await self.middleware.run_in_executor(self.thread_pool, self._execute_write, sql, binds)
File "/usr/local/lib/python3.8/site-packages/middlewared/main.py", line 1110, in run_in_executor
return await loop.run_in_executor(pool, functools.partial(method, *args, **kwargs))
File "/usr/local/lib/python3.8/concurrent/futures/thread.py", line 57, in run
result = self.fn(*self.args, **self.kwargs)
File "/usr/local/lib/python3.8/site-packages/middlewared/plugins/datastore/connection.py", line 68, in _execute_write
result = self.connection.execute(sql, binds)
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/engine/base.py", line 976, in execute
return self.execute_text(object, multiparams, params)
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/engine/base.py", line 1145, in _execute_text
ret = self._execute_context(
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/engine/base.py", line 1287, in _execute_context
self._handle_dbapi_exception(
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/engine/base.py", line 1481, in _handle_dbapi_exception
util.raise_(
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/util/compat.py", line 178, in raise_
raise exception
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/engine/base.py", line 1247, in _execute_context
self.dialect.do_execute(
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/engine/default.py", line 590, in do_execute
cursor.execute(statement, parameters)
sqlalchemy.exc.IntegrityError: (sqlite3.IntegrityError) NOT NULL constraint failed: services_iscsitargetauthcredential.iscsi_target_auth_peersecret
[SQL: INSERT INTO services_iscsitargetauthcredential (iscsi_target_auth_tag, iscsi_target_auth_user, iscsi_target_auth_secret, iscsi_target_auth_peeruser) VALUES (?, ?, ?, ?)]
[parameters: (1, 'iqn.1991-05.com.microsoft:dc-server.cookiemonster.lan', '4vIyTOr+ie9g3K8quWktTFBa/f4f0LwWqPncbkHOnm5TwLaDnAXuPA==', '')]
(Background on this error at: http://sqlalche.me/e/gkpj)