added these lines of code in my handler.js to solve the issue.

    const configPath = path.join(process.cwd(),'standalone/.next/required-server-files.json');
    
    const config = JSON.parse(fs.readFileSync(configPath, 'utf-8'));
    
    const nextConfig = JSON.stringify(config?.config);
    
    process.env.__NEXT_PRIVATE_STANDALONE_CONFIG = nextConfig;