cant run python3 -m app locally

[beniwallokendra]

the error is
Traceback (most recent call last):
File "/usr/lib/python3.8/runpy.py", line 194, in _run_module_as_main
return _run_code(code, main_globals, None,
File "/usr/lib/python3.8/runpy.py", line 87, in _run_code
exec(code, run_globals)
File "/home/loki/Documents/TOOLS/tg-index/app/main.py", line 3, in
from .main import Indexer
File "/home/loki/Documents/TOOLS/tg-index/app/main.py", line 12, in
from .routes import setup_routes
File "/home/loki/Documents/TOOLS/tg-index/app/routes.py", line 8, in
from .config import index_settings
File "/home/loki/Documents/TOOLS/tg-index/app/config.py", line 21, in
api_id = int(os.environ["API_ID", 123521])
File "/usr/lib/python3.8/os.py", line 672, in getitem
value = self._data[self.encodekey(key)]
File "/usr/lib/python3.8/os.py", line 750, in encode
raise TypeError("str expected, not %s" % type(value).name)
TypeError: str expected, not tuple

i dont get it ... like what to do ... how can i fix this ???