我正在使用t3-app和Next.js app router。
我要上传一个音频文件到opanai语音到文本模型使用服务器动作形式。每次我uplaod我的.mp3文件，我无法获取转录。
这是我的代码：

import { api } from "~/trpc/server";

export default function CreateTranscription() {
  async function create(formData: FormData) {
    "use server";

    const audioFile = formData.get("audioFile");

    // mutate data
    if (audioFile !== null && typeof audioFile !== "string") {
      const submit = await api.openai.speechToText.mutate({
        audioFile: audioFile,
      });
    }

    // revalidate cache
  }

  return (
    <>
      <form action={create}>
        <input type="file" name="audioFile" id="audioFile" required />
        <button type="submit">Upload</button>
      </form>
    </>
  );
}

字符串
路由器：

import { z } from "zod";
import {
  createTRPCRouter,
  publicProcedure,
} from "~/server/api/trpc";
import OpenAI from "openai";
import type { Uploadable } from "openai/uploads";

const openai = new OpenAI({
  apiKey: process.env.OPENAI_API_KEY,
});

export const openAIRouter = createTRPCRouter({
  speechToText: publicProcedure
    .input(
      z.object({
        audioFile: z.custom<Uploadable>(),
      }),
    )
    .mutation(async ({ input }) => {
      const transcriptions = await openai.audio.transcriptions.create({
        file: input.audioFile,
        model: "whisper-1",
      });

      return transcriptions;
    }),
});

型
这就是错误：

input: {
    audioFile: File {
      size: 379924,
      type: 'audio/mpeg',
      name: 'Vaundysong.mp3',
      lastModified: 1700993541098
    }
  },
  result: TRPCClientError: fetch failed
      at TRPCClientError.from (webpack-internal:///(rsc)/./node_modules/@trpc/client/dist/TRPCClientError-0de4d231.mjs:41:16)
      at eval (webpack-internal:///(rsc)/./node_modules/@trpc/client/dist/httpBatchLink-204206a5.mjs:207:101) {
    meta: undefined,
    shape: undefined,
    data: undefined,
    [cause]: TypeError: fetch failed
        at Object.fetch (node:internal/deps/undici/undici:11576:11) {
      cause: [RequestContentLengthMismatchError]
    }
  },
  elapsedMs: 8
}
 ⨯ node_modules/@trpc/client/dist/TRPCClientError-0de4d231.mjs (37:15) @ TRPCClientError.from
 ⨯ Internal error: TRPCClientError: fetch failed
    at TRPCClientError.from (./node_modules/@trpc/client/dist/TRPCClientError-0de4d231.mjs:41:16)
    at eval (./node_modules/@trpc/client/dist/httpBatchLink-204206a5.mjs:207:101)
Cause: TypeError: fetch failed
    at Object.fetch (node:internal/deps/undici/undici:11576:11) {
  cause: RequestContentLengthMismatchError: Request body length does not match content-length header
      at AsyncWriter.end (/Users/hurraychak/Side Projects/muspic/node_modules/next/dist/compiled/undici/index.js:1:82741)
      at writeIterable (/Users/hurraychak/Side Projects/muspic/node_modules/next/dist/compiled/undici/index.js:1:81411) {
    code: 'UND_ERR_REQ_CONTENT_LENGTH_MISMATCH'
  }

型
我认为我的.mp3文件符合格式，但错误消息似乎在谈论我的请求不符合要求。我不知道问题来自哪里，因为我对全栈开发非常陌生。
也许我的openai_API_key不工作？或者有什么可能的方法可以知道我的文件是否匹配API？