```(.venv) visch@visch-ubuntu:~/git/meltano/testdir$ meltano --log-level=debug invoke target-csv [2021-08-14 131628,669] [1885|MainThread|root] [DEBUG] Creating engine <meltano.core.project.Project object at 0x7f7e7383ee50>@sqlite:////home/visch/git/meltano/testdir/.meltano/meltano.db [2021-08-14 131628,701] [1885|MainThread|urllib3.connectionpool] [DEBUG] Starting new HTTPS connection (1): www.meltano.com:443 [2021-08-14 131628,922] [1885|MainThread|urllib3.connectionpool] [DEBUG] https://www.meltano.com:443 "GET /discovery.yml?project_id=e713709f-f225-4fff-8f19-03f3a5b9e910 HTTP/1.1" 200 115895 [2021-08-14 131629,356] [1885|MainThread|meltano.core.utils] [DEBUG] Variable '$MELTANO_LOAD_SCHEMA' is missing from the environment. [2021-08-14 131629,358] [1885|MainThread|meltano.core.utils] [DEBUG] Variable '$MELTANO_LOAD_SCHEMA' is missing from the environment. [2021-08-14 131629,358] [1885|MainThread|root] [DEBUG] Created configuration at /home/visch/git/meltano/testdir/.meltano/run/target-csv/target.871a464e-14e9-4f81-8884-facea30b2ffd.config.json [2021-08-14 131629,359] [1885|MainThread|root] [DEBUG] Deleted configuration at /home/visch/git/meltano/testdir/.meltano/run/target-csv/target.871a464e-14e9-4f81-8884-facea30b2ffd.config.json [2021-08-14 131629,359] [1885|MainThread|meltano.cli.utils] [DEBUG] 'NoneType' object has no attribute 'full_refresh' Traceback (most recent call last): File "/home/visch/git/meltano/.venv/lib/python3.8/site-packages/meltano/cli/__init__.py", line 44, in main cli(obj={"project": None}) File "/home/visch/git/meltano/.venv/lib/python3.8/site-packages/click/core.py", line 829, in call return self.main(*args, **kwargs) File "/home/visch/git/meltano/.venv/lib/python3.8/site-packages/click/core.py", line 782, in main rv = self.invoke(ctx) File "/home/visch/git/meltano/.venv/lib/python3.8/site-packages/click/core.py", line 1259, in invoke return _process_result(sub_ctx.command.invoke(sub_ctx)) File "/home/visch/git/meltano/.venv/lib/python3.8/site-packages/click/core.py", line 1066, in invoke return ctx.invoke(self.callback, **ctx.params) File "/home/visch/git/meltano/.venv/lib/python3.8/site-packages/click/core.py", line 610, in invoke return callback(*args, **kwargs) File "/home/visch/git/meltano/.venv/lib/python3.8/site-packages/meltano/cli/params.py", line 23, in decorate return func(*args, **kwargs) File "/home/visch/git/meltano/.venv/lib/python3.8/site-packages/meltano/cli/params.py", line 56, in decorate func(project, *args, **kwargs) File "/home/visch/git/meltano/.venv/lib/python3.8/site-packages/meltano/cli/invoke.py", line 65, in invoke handle = invoker.invoke(*plugin_args, command=command_name) File "/home/visch/git/meltano/.venv/lib/python3.8/site-packages/meltano/core/plugin_invoker.py", line 272, in invoke with self._invoke(*args, **kwargs) as (popen_args, popen_options, popen_env): File "/usr/lib/python3.8/contextlib.py", line 113, in enter return next(self.gen) File "/home/visch/git/meltano/.venv/lib/python3.8/site-packages/meltano/core/plugin_invoker.py", line 257, in _invoke with self.plugin.trigger_hooks("invoke", self, args): File "/usr/lib/python3.8/contextlib.py", line 113, in enter return next(self.gen) File "/home/visch/git/meltano/.venv/lib/python3.8/site-packages/meltano/core/behavior/hookable.py", line 70, in trigger_hooks self.class.trigger(self, f"before_{hook_name}", *args, **kwargs) File "/home/visch/git/meltano/.venv/lib/python3.8/site-packages/meltano/core/behavior/hookable.py", line 97, in trigger raise err File "/home/visch/git/meltano/.venv/lib/python3.8/site-packages/meltano/core/behavior/hookable.py", line 89, in trigger hook_func(target, *args, **kwargs) File "/home/visch/git/meltano/.venv/lib/python3.8/site-packages/meltano/core/plugin/singer/target.py", line 107, in setup_bookmark_writer_hook s…