API: Fix exceptions and defaults

Stop conditions was None, causing model to error out when trying to
add the EOS token to a None value.

Authentication failed when Bearer contained an empty string. To fix
this, add a condition which checks array length.

Signed-off-by: kingbri <bdashore3@proton.me>

OAI/types/common.py

@@ -29,7 +29,7 @@ class CommonCompletionRequest(BaseModel):
     # Generation info
     seed: Optional[int] = -1
     stream: Optional[bool] = False
-    stop: Optional[Union[str, List[str]]] = None
+    stop: Optional[Union[str, List[str]]] = []
 
     # Default to 150 as 16 makes no sense as a default
     max_tokens: Optional[int] = 150