```meltano | DEBUG ELT could not be completed: Cannot start extractor: Catalog discovery failed: command ['/meltano-project/.meltano/extractors/tap-s3-csv/venv/bin/tap-s3-csv', '--config', '/meltano-project/.meltano/run/elt/2021-10-01T165951--tap-s3-csv--target-redshift-raw/c2c0d441-7f49-4a04-a4f8-7e0a5d3cca6b/tap.6e664c35-584f-42ef-b969-366b3eef6e68.config.json', '--discover'] returned 1 Traceback (most recent call last): File "/usr/local/lib/python3.6/site-packages/meltano/core/runner/singer.py", line 67, in invoke stderr=asyncio.subprocess.PIPE, # Log File "/usr/local/lib/python3.6/site-packages/meltano/core/plugin_invoker.py", line 275, in invoke_async async with self._invoke(*args, **kwargs) as ( File "/usr/local/lib/python3.6/site-packages/async_generator/_util.py", line 34, in aenter return await self._agen.asend(None) File "/usr/local/lib/python3.6/site-packages/meltano/core/plugin_invoker.py", line 260, in _invoke async with self.plugin.trigger_hooks("invoke", self, args): File "/usr/local/lib/python3.6/site-packages/async_generator/_util.py", line 34, in aenter return await self._agen.asend(None) File "/usr/local/lib/python3.6/site-packages/meltano/core/behavior/hookable.py", line 87, in trigger_hooks await self.class.trigger(self, f"before_{hook_name}", *args, **kwargs) File "/usr/local/lib/python3.6/site-packages/meltano/core/behavior/hookable.py", line 115, in trigger raise err File "/usr/local/lib/python3.6/site-packages/meltano/core/behavior/hookable.py", line 107, in trigger await hook_func(target, *args, **kwargs) File "/usr/local/lib/python3.6/site-packages/meltano/core/plugin/singer/tap.py", line 251, in discover_catalog_hook await self.discover_catalog(plugin_invoker) File "/usr/local/lib/python3.6/site-packages/meltano/core/plugin/singer/tap.py", line 297, in discover_catalog await self.run_discovery(plugin_invoker, catalog_path) File "/usr/local/lib/python3.6/site-packages/meltano/core/plugin/singer/tap.py", line 358, in run_discovery f"Catalog discovery failed: command {plugin_invoker.exec_args('--discover')} returned {exit_code}" meltano.core.plugin.error.PluginExecutionError: Catalog discovery failed: command ['/meltano-project/.meltano/extractors/tap-s3-csv/venv/bin/tap-s3-csv', '--config', '/meltano-project/.meltano/run/elt/2021-10-01T165951--tap-s3-csv--target-redshift-raw/c2c0d441-7f49-4a04-a4f8-7e0a5d3cca6b/tap.6e664c35-584f-42ef-b969-366b3eef6e68.config.json', '--discover'] returned 1 The above exception was the direct cause of the following exception: Traceback (most recent call last): File "/usr/local/lib/python3.6/site-packages/meltano/cli/elt.py", line 239, in _run_elt await _run_extract_load(elt_context, output_logger) File "/usr/local/lib/python3.6/site-packages/meltano/cli/elt.py", line 282, in _run_extract_load loader_out=loader_out_writer, File "/usr/local/lib/python3.6/site-packages/meltano/core/runner/singer.py", line 230, in run loader_out=loader_out, File "/usr/local/lib/python3.6/site-packages/meltano/core/runner/singer.py", line 70, in invoke raise RunnerError(f"Cannot start extractor: {err}") from err meltano.core.runner.RunnerError: Cannot start extractor: Catalog discovery failed: command ['/meltano-project/.meltano/extractors/tap-s3-csv/venv/bin/tap-s3-csv', '--config', '/meltano-project/.meltano/run/elt/2021-10-01T165951--tap-s3-csv--target-redshift-raw/c2c0d441-7f49-4a04-a4f8-7e0a5d3cca6b/tap.6e664c35-584f-42ef-b969-366b3eef6e68.config.json', '--discover'] returned 1 The above exception was the direct cause of the following exception: Traceback (most recent call last): File "/usr/local/lib/python3.6/site-packages/meltano/cli/elt.py", line 227, in _redirect_output yield File "/usr/local/lib/python3.6/site-packages/meltano/cli/elt.py", line 248, in _run_elt raise CliError(f"ELT could not be completed: {err}") from err meltano.cli.utils.CliErro…

Hi @boggdan_barrientos! This

voluptuous.error.MultipleInvalid: expected a list

makes me think it's an error in one of the config values. Likely

tables

. Does

meltano invoke tap-s3-csv

work? If not, can you run

meltano config tap-s3-csv

and confirm that the config JSON looks good?

Fwiw, if you are using

meltano config set

to set variables, the

kind

must be correct in order for this to work properly. the error being raised tells me that a list value is expected but a string value was provided - implying it might have been set via

meltano config set

but meltano CLI may have configured it as a string (the default behavior) rather than as an object or list. @boggdan_barrientos - Can you confirm if you see this might be the root cause? If so, we'd welcome your thoughts on the related issue here.

@aaronsteers thanks! I was modifying the .yml directly so the root was not it. I was able to configure it,

meltano invoke tap-s3-csv

got sticky with

name=tap_s3_csv level=INFO message=Attempting to create AWS session

but

meltano select tap-s3-csv --list

shows me the table and headers. The elt doesn't creates any table in the target.