JSONDecodeError on local ollama model

[jeffreyrobeson]

Describe the bug
requests.exceptions.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

Error logs/Screenshots
If applicable, add logs/screenshots to give more information about the issue.
[2024-03-25 21:13:04,996] ERROR in app: Exception on /api/v0/generate_sql [GET]
Traceback (most recent call last):
File "C:\Users\Administrator\pinokio\bin\miniconda\envs\dbgpt_env\lib\site-packages\requests\models.py", line 971, in json
return complexjson.loads(self.text, **kwargs)
File "C:\Users\Administrator\pinokio\bin\miniconda\envs\dbgpt_env\lib\json_init_.py", line 346, in loads
return _default_decoder.decode(s)
File "C:\Users\Administrator\pinokio\bin\miniconda\envs\dbgpt_env\lib\json\decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "C:\Users\Administrator\pinokio\bin\miniconda\envs\dbgpt_env\lib\json\decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "C:\Users\Administrator\pinokio\bin\miniconda\envs\dbgpt_env\lib\site-packages\flask\app.py", line 1463, in wsgi_app
response = self.full_dispatch_request()
File "C:\Users\Administrator\pinokio\bin\miniconda\envs\dbgpt_env\lib\site-packages\flask\app.py", line 872, in full_dispatch_request
rv = self.handle_user_exception(e)
File "C:\Users\Administrator\pinokio\bin\miniconda\envs\dbgpt_env\lib\site-packages\flask\app.py", line 870, in full_dispatch_request
rv = self.dispatch_request()
File "C:\Users\Administrator\pinokio\bin\miniconda\envs\dbgpt_env\lib\site-packages\flask\app.py", line 855, in dispatch_request
return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args) # type: ignore[no-any-return]
File "C:\Users\Administrator\pinokio\bin\miniconda\envs\dbgpt_env\lib\site-packages\vanna\flask_init_.py", line 169, in generate_sql
sql = vn.generate_sql(question=question)
File "C:\Users\Administrator\pinokio\bin\miniconda\envs\dbgpt_env\lib\site-packages\vanna\ollama_init_.py", line 51, in generate_sql
sql = super().generate_sql(question, **kwargs)
File "C:\Users\Administrator\pinokio\bin\miniconda\envs\dbgpt_env\lib\site-packages\vanna\base\base.py", line 117, in generate_sql
llm_response = self.submit_prompt(prompt, **kwargs)
File "C:\Users\Administrator\pinokio\bin\miniconda\envs\dbgpt_env\lib\site-packages\vanna\ollama_init_.py", line 70, in submit_prompt
response_dict = response.json()
File "C:\Users\Administrator\pinokio\bin\miniconda\envs\dbgpt_env\lib\site-packages\requests\models.py", line 975, in json
raise RequestsJSONDecodeError(e.msg, e.doc, e.pos)
requests.exceptions.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

Desktop (please complete the following information where):

• OS: windows
• Version: 10
• Python: 3.10
• Vanna: 0.2.1

Additional context
Add any other context about the problem here.