Hi everyone! I'm having issues installing the dbt-bigquery plugin in meltano, and I was wondering if any of you had any insight as to why this is happening. Basically, if I try to run

meltano install utility dbt-bigquery

I get the following error message:

root@cac5e519166e:/project# meltano install utility dbt-bigquery
Installing 1 plugins...
Installing utility 'dbt-bigquery'...
Utility 'dbt-bigquery' could not be installed: failed to install plugin 'dbt-bigquery'.
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/runpy.py", line 194, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/usr/local/lib/python3.8/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "/project/.meltano/utilities/dbt-bigquery/venv/lib/python3.8/site-packages/pip/__main__.py", line 31, in <module>
  File "/project/.meltano/utilities/dbt-bigquery/venv/lib/python3.8/site-packages/pip/_internal/cli/main.py", line 77, in main
  File "/project/.meltano/utilities/dbt-bigquery/venv/lib/python3.8/site-packages/pip/_internal/commands/__init__.py", line 114, in create_command
  File "/usr/local/lib/python3.8/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 843, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/project/.meltano/utilities/dbt-bigquery/venv/lib/python3.8/site-packages/pip/_internal/commands/install.py", line 15, in <module>
  File "/project/.meltano/utilities/dbt-bigquery/venv/lib/python3.8/site-packages/pip/_internal/cli/req_command.py", line 20, in <module>
  File "/project/.meltano/utilities/dbt-bigquery/venv/lib/python3.8/site-packages/pip/_internal/index/collector.py", line 43, in <module>
ModuleNotFoundError: No module named 'pip._internal.index.sources'

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Failed to install plugin(s)

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