GoogleGenerative API 400 Bad Request

Всем привет, пишу бота для Discord, в который хотел бы внедрить настроенную модель на основе Gemini. Для того чтобы модель заработала, мне нужно было получить OAuth-ключ. Я пошёл изучать, как его получить через Postman. Похоже, у меня получилось, но при запросе в консоль выводится вот такое сообщение:

GoogleGenerativeAIFetchError: [GoogleGenerativeAI Error]: Error fetching from https://generativelanguage.googleapis.com/v1beta/tunedModels/nursultanai-enlfq4pioewv:generateContent: [400 Bad Request] API key not valid. Please pass a valid API key. [{"@type":"type.googleapis.com/google.rpc.ErrorInfo","reason":"API_KEY_INVALID","domain":"googleapis.com","metadata":{"service":"generativelanguage.googleapis.com"}}]
at _makeRequestInternal (/home/runner/ai-assistant/node_modules/@google/generative-ai/dist/index.js:353:19)
at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
at async generateContent (/home/runner/ai-assistant/node_modules/@google/generative-ai/dist/index.js:746:22)
at async generateResponse (/home/runner/ai-assistant/asi/neuro.js:255:18)
at async Client.<anonymous> (/home/runner/ai-assistant/asi/neuro.js:279:22)
Emitted 'error' event on Client instance at:
at emitUnhandledRejectionOrErr (node:events:401:10)
at process.processTicksAndRejections (node:internal/process/task_queues:84:21) {
  status: 400,
  statusText: 'Bad Request',
  errorDetails: [
{
  '@type': 'type.googleapis.com/google.rpc.ErrorInfo',
  reason: 'API_KEY_INVALID',
  domain: 'googleapis.com',
  metadata: { service: 'generativelanguage.googleapis.com' }
}
]
}

В чём заключается проблема даже понять не могу, т.к раньше не работал с API Гугловским. Надеюсь, хоть кто-то попытается помочь такому чайнику - как я

const {
    GoogleGenerativeAI,
    HarmCategory,
    HarmBlockThreshold,
} = require("@google/generative-ai");

const discord = require("discord.js");

const MODEL_NAME = "tunedModels/nursultanai-enlfq4pioewv";
const API_KEY = "ya29.a0AXooCgtwbtqF7T1XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
const DISCORD_TOKEN =
    "MTIzNjc4MzMxMDUyOTYyNjE2MwXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";

const client = new discord.Client({
    intents: Object.keys(discord.GatewayIntentBits),
});

let history = {};

async function generateResponse(inputText, iduser) {
 const genAI = new GoogleGenerativeAI(API_KEY);
        const model = genAI.getGenerativeModel({ model: MODEL_NAME }, {apiVersion: 'v1beta'});

    if (!history[iduser]) {
            history[iduser] = [];
    }

        const generationConfig = {
                temperature: 0.7,
                //topK: 0,
                //topP: 1,
                //maxOutputTokens: 2048,
        };

        const safetySettings = [
    {
            category: HarmCategory.HARM_CATEGORY_HARASSMENT,
            threshold: HarmBlockThreshold.BLOCK_ONLY_HIGH,
        },
        {
            category: HarmCategory.HARM_CATEGORY_HATE_SPEECH,
            threshold: HarmBlockThreshold.BLOCK_ONLY_HIGH,
        },
        {
            category: HarmCategory.HARM_CATEGORY_SEXUALLY_EXPLICIT,
            threshold: HarmBlockThreshold.BLOCK_ONLY_HIGH,
        },
        {
            category: HarmCategory.HARM_CATEGORY_DANGEROUS_CONTENT,
            threshold: HarmBlockThreshold.BLOCK_ONLY_HIGH,
        },
        ];

        history[iduser].push({ text: `input: ${inputText}` });

    const parts = [
        ...history[iduser],
    { text: `input: ${inputText}` },
            { text: "output: " },
    ];

console.log(history[iduser])

        const result = await model.generateContent({
                contents: [{ role: "user", parts }],
                generationConfig,
                safetySettings,
        });

        history[iduser].push({ text: `output: ${result.response.text()}` });

        return result.response.text();
}

client.on("messageCreate", async (message) => {
    if (message.author.bot) {
        return;
    }

    const channelCategory = message.channel.parent ? message.channel.parent.name.toLowerCase() : null;
    if (channelCategory !== allowedCategoryName.toLowerCase()) {
        return; 
    }
    
    const content = message.content.toLowerCase()
    const containsTriggerWord = triggerWords.some((word) => content.includes(word));

    if (containsTriggerWord) {
        message.channel.sendTyping();

        const response = await generateResponse(message.content, message.author.id);

        message.channel.send(response);
    }
});

client.login(DISCORD_TOKEN);