Failure in using frameType parameter

[1192119703jzx]

Bug Description

When I run the command curl -H "Accept: application/json" -X POST -d@/home/zixinjiang/east-eval/tf-modified/cpb-aacip-08fb0e1f287.mmif -s http://localhost:3000?frameType=slate > tf-test-output.mmif, it should recognize the parameter frameType=slate with values "slate". However, it returns ValueError: Value for parameter "frameType" must be one of ['', 'slate', 'chyron', 'rolling-credit']

This error is caused by the line of code choices=["", "slate", "chyron", "rolling-credit"] in metadata.py

Reproduction steps

Run the app, using the command with frameType=slate, frameType=chyron, or frameType=slate&frameType=chyron

Expected behavior

No response

Log output

No response

Screenshots

Traceback (most recent call last):
File "/home/zixinjiang/east/lib64/python3.9/site-packages/clams/restify/init.py", line 146, in post
return self.json_to_response(self.cla.annotate(raw_data, **raw_params))
File "/home/zixinjiang/east/lib64/python3.9/site-packages/clams/app/init.py", line 146, in annotate
refined = self._refine_params(**runtime_params)
File "/home/zixinjiang/east/lib64/python3.9/site-packages/clams/app/init.py", line 220, in _refine_params
raise ValueError(f"Value for parameter "{parameter.name}" must be one of {parameter.choices}.")
ValueError: Value for parameter "frameType" must be one of ['', 'slate', 'chyron', 'rolling-credit'].

Additional context

This bug can be solved by deleted the line of code choices=["", "slate", "chyron", "rolling-credit"]