POST('/jail/releases_choices', False) return <Response [500]> if there is no release installed

Traceback:

{'message': "('Dataset tank/iocage/releases not found',)",
 'traceback': 'concurrent.futures.process._RemoteTraceback: \n"""\nTraceback (most recent call last):\n  File "/usr/local/lib/python3.7/concurrent/futures/process.py", line 232, in _process_worker\n    r = call_item.fn(*call_item.args, **call_item.kwargs)\n  File "/usr/local/lib/python3.7/site-packages/middlewared/worker.py", line 105, in main_worker\n    res = loop.run_until_complete(coro)\n  File "/usr/local/lib/python3.7/asyncio/base_events.py", line 584, in run_until_complete\n    return future.result()\n  File "/usr/local/lib/python3.7/site-packages/middlewared/worker.py", line 61, in _run\n    return await self._call(name, serviceobj, methodobj, params=args, job=job)\n  File "/usr/local/lib/python3.7/site-packages/middlewared/worker.py", line 53, in _call\n    return methodobj(*params)\n  File "/usr/local/lib/python3.7/site-packages/middlewared/worker.py", line 53, in _call\n    return methodobj(*params)\n  File "/usr/local/lib/python3.7/site-packages/middlewared/schema.py", line 952, in nf\n    return f(*args, **kwargs)\n  File "/usr/local/lib/python3.7/site-packages/middlewared/plugins/jail.py", line 596, in releases_choices\n    choices = {k: k for k in iocage.fetch(list=True, remote=remote, http=True)}\n  File "/usr/local/lib/python3.7/site-packages/iocage_lib/iocage.py", line 1158, in fetch\n    rel_list = self.list("base")\n  File "/usr/local/lib/python3.7/site-packages/iocage_lib/iocage.py", line 1411, in list\n    silent=self.silent\n  File "/usr/local/lib/python3.7/site-packages/iocage_lib/ioc_list.py", line 64, in list_datasets\n    ds = self.zfs.get_dataset(f"{self.pool}/iocage/releases").children\n  File "libzfs.pyx", line 915, in libzfs.ZFS.get_dataset\nlibzfs.ZFSException: Dataset tank/iocage/releases not found\n"""\n\nThe above exception was the direct cause of the following exception:\n\nTraceback (most recent call last):\n  File "/usr/local/lib/python3.7/site-packages/middlewared/restful.py", line 521, in do\n    result = await self.middleware.call(methodname, *method_args)\n  File "/usr/local/lib/python3.7/site-packages/middlewared/main.py", line 1150, in call\n    app=app, pipes=pipes, job_on_progress_cb=job_on_progress_cb, io_thread=True,\n  File "/usr/local/lib/python3.7/site-packages/middlewared/main.py", line 1089, in _call\n    return await self._call_worker(name, *args)\n  File "/usr/local/lib/python3.7/site-packages/middlewared/main.py", line 1109, in _call_worker\n    return await self.run_in_proc(main_worker, name, args, job)\n  File "/usr/local/lib/python3.7/site-packages/middlewared/main.py", line 1041, in run_in_proc\n    return await self.run_in_executor(self.__procpool, method, *args, **kwargs)\n  File "/usr/local/lib/python3.7/site-packages/middlewared/main.py", line 1015, in run_in_executor\n    return await loop.run_in_executor(pool, functools.partial(method, *args, **kwargs))\nlibzfs.ZFSException: (\'Dataset tank/iocage/releases not found\',)\n'}