Otel metrics error when using api calls

[Umaaz]

Describe the bug
The error below is given when using the api to create tracepoints (_deep.register_tracepoint("simple_test.py", 41, metrics=[MetricDefinition("uuid_length", "histogram")])

2024-02-05 18:19:15,907 - deep - ERROR - Error registering metric histogram deep_uuid_length
Traceback (most recent call last):
  File "/home/bdonnell/repo/github/intergral/test-app-python/venv/lib/python3.10/site-packages/deep/api/plugin/metric/otel_metrics.py", line 107, in histogram
    histogram = self.__check_cache(name, 'histogram',
  File "/home/bdonnell/repo/github/intergral/test-app-python/venv/lib/python3.10/site-packages/deep/api/plugin/metric/otel_metrics.py", line 47, in __check_cache
    default = from_default()
  File "/home/bdonnell/repo/github/intergral/test-app-python/venv/lib/python3.10/site-packages/deep/api/plugin/metric/otel_metrics.py", line 108, in <lambda>
    lambda: get_meter('deep').create_histogram(f'{namespace}_{name}', unit,
  File "/home/bdonnell/repo/github/intergral/test-app-python/venv/lib/python3.10/site-packages/opentelemetry/sdk/metrics/_internal/__init__.py", line 193, in create_histogram
    ) = self._is_instrument_registered(name, _Histogram, unit, description)
  File "/home/bdonnell/repo/github/intergral/test-app-python/venv/lib/python3.10/site-packages/opentelemetry/metrics/_internal/__init__.py", line 225, in _is_instrument_registered
    instrument_id = ",".join(
TypeError: sequence item 2: expected str instance, NoneType found

To Reproduce
Steps to reproduce the behavior:

1. Use the api deep.register_tracepoint to create a metric with just a name a type.
2. See error

Expected behavior
A metric should be created with default values.

Desktop (please complete the following information):

• Python Version [e.g. cpython 3.12] cpython 3.10.12

Additional context
Add any other context about the problem here.