Chat Completion Error

[hanchao2407]

Hey All, I'm using this package for the first time today and trying the Chat Completion example code, the console shows below error. How to fix?

[OpenAI] api key set to ***********D
[OpenAI] accessing endpoint: /chat/completions
E/flutter ( 5165): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: NoSuchMethodError: Class 'String' has no instance getter 'value'.
E/flutter ( 5165): Receiver: "auto"
E/flutter ( 5165): Tried calling: value
E/flutter ( 5165): #0 Object.noSuchMethod (dart:core-patch/object_patch.dart:38:5)
E/flutter ( 5165): #1 OpenAIChat.create

---

The example code:

// the system message that will be sent to the request.
final systemMessage = OpenAIChatCompletionChoiceMessageModel(
content: [
OpenAIChatCompletionChoiceMessageContentItemModel.text(
"return any message you are given as JSON.",
),
],
role: OpenAIChatMessageRole.assistant,
);

// the user message that will be sent to the request.
final userMessage = OpenAIChatCompletionChoiceMessageModel(
content: [
OpenAIChatCompletionChoiceMessageContentItemModel.text(
"Hello, I am a chatbot created by OpenAI. How are you today?",
),

 //! image url contents are allowed only for models with image support such gpt-4.
 OpenAIChatCompletionChoiceMessageContentItemModel.imageUrl(
   "https://placehold.co/600x400",
 ),

],
role: OpenAIChatMessageRole.user,
);

// all messages to be sent.
final requestMessages = [
systemMessage,
userMessage,
];

// the actual request.
OpenAIChatCompletionModel chatCompletion = await OpenAI.instance.chat.create(
model: "gpt-3.5-turbo-1106",
responseFormat: {"type": "json_object"},
seed: 6,
messages: requestMessages,
temperature: 0.2,
maxTokens: 500,
toolChoice: "auto",
);

print(chatCompletion.choices.first.message); // ...
print(chatCompletion.systemFingerprint); // ...
print(chatCompletion.usage.promptTokens); // ...
print(chatCompletion.id); // ...

[hanchao2407]

can anybody help?

[HitchingHobo]

I had this issue too, remove the toolChoice= "auto" line and it should work.