The code returns the following error:

Error [GatewayInternalServerError]: AI Gateway requires a valid credit card on file to service requests. Please visit https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dadd-credit-card to add a card and unlock your free credits.  
    at ignore-listed frames {  
  statusCode: 403,  
  type: 'internal_server_error',  
  [cause]: Error [AI_APICallError]: [object Object]  
      at ignore-listed frames {  
    cause: undefined,  
    url: 'https://ai-gateway.vercel.sh/v3/ai/language-model',  
    requestBodyValues: {  
      maxOutputTokens: undefined,  
      temperature: undefined,  
      topP: undefined,  
      topK: undefined,  
      presencePenalty: undefined,  
      frequencyPenalty: undefined,  
      stopSequences: undefined,  
      seed: undefined,  
      tools: undefined,  
      toolChoice: undefined,  
      responseFormat: undefined,  
      prompt: [Array],  
      providerOptions: undefined,  
      headers: undefined,  
      includeRawChunks: false  
    },  
    statusCode: 403,  
    responseHeaders: {  
      'cache-control': 'public, max-age=0, must-revalidate',  
      'content-encoding': 'br',  
      'content-type': 'application/json',  
      date: 'Sat, 21 Feb 2026 02:07:25 GMT',  
      server: 'Vercel',  
      'strict-transport-security': 'max-age=63072000; includeSubDomains; preload',  
      'transfer-encoding': 'chunked',  
      vary: 'rsc, next-router-state-tree, next-router-prefetch, next-router-segment-prefetch',  
      'x-matched-path': '/v3/ai/language-model',  
      'x-vercel-cache': 'MISS',  
      'x-vercel-id': 'cle1::cle1::gqkzl-1771639644083-d60d7b424e5f'  
    },  
    responseBody: '{"error":{"message":"AI Gateway requires a valid credit card on file to service requests. Please visit https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dadd-credit-card to add a card and unlock your free credits.","type":"customer_verification_required"}}',  
    isRetryable: false,  
    data: { error: [Object] }  
  }  
}  
  

Revise the code to address the error.

I was previewing: /chat