Bedrock produces "ValidationException: This model doesn't support the toolConfig.toolChoice.tool field." when using Nova model.

[pr1ntr]

Description

I am attempting to use AWS's Nova model with generateObject and it produces this error:

ValidationException: This model doesn't support the toolConfig.toolChoice.tool field. Remove toolConfig.toolChoice.tool and try again.

Code example

AWS_BEDROCK_REGION=us-east-1
AWS_BEDROCK_MODEL_ID=amazon.nova-pro-v1:0

import { createAmazonBedrock } from '@ai-sdk/amazon-bedrock'
import { generateObject } from 'ai'
import mime from 'mime'
import fs from 'fs/promises'
import { MODEL_ID, BEDROCK_REGION } from '../data/constants.js'

const bedrock = createAmazonBedrock({
  region: BEDROCK_REGION,
})
const model = bedrock(MODEL_ID)

//In this situation there are no files being passed.
export async function generate(prompt, schema, system = null, files = []) {
  const time = Date.now()
  console.log('Generating data...')

  const fileParts = []
  for (let file of files) {
    const fileBuffer = await fs.readFile(file)
    const fileMime = mime.getType(file)
    fileParts.push({
      type: 'file',
      data: fileBuffer,
      mimeType: fileMime,
    })
  }

  const { object } = await generateObject({
    model,
    temperature: 0.8,
    maxTokens: 5120,
    output: 'object',
    schema,
    ...(system ? { system } : {}),
    messages: [
      {
        role: 'user',
        content: [
          {
            type: 'text',
            text: prompt,
          },
          ...fileParts,
        ],
      },
    ],
  })

  console.log('Time to generate data:', Date.now() - time)

  return object
}

AI provider

"@ai-sdk/amazon-bedrock": "^1.0.8",

Additional context

No response