hmt build fails

[TomerRZN]

I tried building a spec using hmt like that (Win10):
hmt build -i ~/Documents/data/full_flow.jsonl -o ~/Documents/data/full_flow

This is the exception i get:

Error updating spec Traceback (most recent call last): File "c:\users\tomer\appdata\local\programs\python\python38-32\lib\site-packages\hmt\build\builder.py", line 551, in build_schema_async schema = update_openapi(schema, exchange, mode) File "c:\users\tomer\appdata\local\programs\python\python38-32\lib\site-packages\hmt\build\builder.py", line 416, in update_openapi path_match_result = find_matching_path( File "c:\users\tomer\appdata\local\programs\python\python38-32\lib\site-packages\hmt\build\paths.py", line 250, in find_matching_path ) = fn(path, path_item) File "c:\users\tomer\appdata\local\programs\python\python38-32\lib\site-packages\hmt\build\paths.py", line 241, in <lambda> lambda p, pi: _dumb_match_to_path( File "c:\users\tomer\appdata\local\programs\python\python38-32\lib\site-packages\hmt\build\paths.py", line 131, in _dumb_match_to_path (len(candidate_potential_conflict.content.keys()) != 1) AttributeError: 'NoneType' object has no attribute 'keys' Writing to folder C:\Users\tomer\Documents\data\full_flow Shutting down source Traceback (most recent call last): File "c:\users\tomer\appdata\local\programs\python\python38-32\lib\runpy.py", line 194, in _run_module_as_main return _run_code(code, main_globals, None, File "c:\users\tomer\appdata\local\programs\python\python38-32\lib\runpy.py", line 87, in _run_code exec(code, run_globals) File "C:\Users\tomer\AppData\Local\Programs\Python\Python38-32\Scripts\hmt.exe\__main__.py", line 9, in <module> File "c:\users\tomer\appdata\local\programs\python\python38-32\lib\site-packages\click\core.py", line 764, in __call__ return self.main(*args, **kwargs) File "c:\users\tomer\appdata\local\programs\python\python38-32\lib\site-packages\click\core.py", line 717, in main rv = self.invoke(ctx) File "c:\users\tomer\appdata\local\programs\python\python38-32\lib\site-packages\click\core.py", line 1137, in invoke return _process_result(sub_ctx.command.invoke(sub_ctx)) File "c:\users\tomer\appdata\local\programs\python\python38-32\lib\site-packages\click\core.py", line 956, in invoke return ctx.invoke(self.callback, **ctx.params) File "c:\users\tomer\appdata\local\programs\python\python38-32\lib\site-packages\click\core.py", line 555, in invoke return callback(*args, **kwargs) File "c:\users\tomer\appdata\local\programs\python\python38-32\lib\site-packages\hmt\__main__.py", line 155, in build run_from_source(source, UpdateMode[mode.upper()], openapi_spec, sinks=sinks) File "c:\users\tomer\appdata\local\programs\python\python38-32\lib\site-packages\hmt\__main__.py", line 79, in run_from_source loop.run_until_complete(run(loop)) File "c:\users\tomer\appdata\local\programs\python\python38-32\lib\asyncio\base_events.py", line 616, in run_until_complete return future.result() File "c:\users\tomer\appdata\local\programs\python\python38-32\lib\site-packages\hmt\__main__.py", line 76, in run await sink_task File "c:\users\tomer\appdata\local\programs\python\python38-32\lib\site-packages\hmt\__main__.py", line 40, in write_to_sink async for result in result_stream: File "c:\users\tomer\appdata\local\programs\python\python38-32\lib\site-packages\hmt\build\builder.py", line 551, in build_schema_async schema = update_openapi(schema, exchange, mode) File "c:\users\tomer\appdata\local\programs\python\python38-32\lib\site-packages\hmt\build\builder.py", line 416, in update_openapi path_match_result = find_matching_path( File "c:\users\tomer\appdata\local\programs\python\python38-32\lib\site-packages\hmt\build\paths.py", line 250, in find_matching_path ) = fn(path, path_item) File "c:\users\tomer\appdata\local\programs\python\python38-32\lib\site-packages\hmt\build\paths.py", line 241, in <lambda> lambda p, pi: _dumb_match_to_path( File "c:\users\tomer\appdata\local\programs\python\python38-32\lib\site-packages\hmt\build\paths.py", line 131, in _dumb_match_to_path (len(candidate_potential_conflict.content.keys()) != 1) AttributeError: 'NoneType' object has no attribute 'keys'

Did i do anything wrong?