FileSystemException: Cannot open file, path = 'file:///usr/local/server/src/static/index.html' (OS E

    "projectId": "64fff1b78429690cbb74",
    "projectName": "windope",
    "functions": [
        {
            "$id": "65480141667102a7bf37",
            "name": "site",
            "runtime": "dart-2.17",
            "execute": [],
            "events": [],
            "schedule": "",
            "timeout": 15,
            "enabled": true,
            "logging": true,
            "entrypoint": "lib/main.dart",
            "commands": "dart pub get",
            "ignore": [
                ".packages",
                ".dart_tool"
            ],
            "path": "./"
        }
    ]
}

final String _dirname = Platform.script.toFilePath();
final String staticFolder = '${Uri.file(_dirname).resolve('../static')}';

/// Throws an error if any of the keys are missing from the object
/// @param obj - The object to check
/// @param keys - The list of keys to check for
/// @throws Exception
void throwIfMissing(Map<String, dynamic> obj, List<String> keys) {
  final missing = <String>[];
  for (var key in keys) {
    if (!obj.containsKey(key) || obj[key] == null) {
      missing.add(key);
    }
  }
  if (missing.isNotEmpty) {
    throw Exception('Missing required fields: ${missing.join(', ')}');
  }
}

/// Returns the contents of a file in the static folder
/// @param fileName - The name of the file to read
/// @returns Contents of static/{fileName}
Future<String> getStaticFile(String fileName) {
  return File('index.html').readAsString();
}

  return File('index.html').readAsString();
}
``` have hardcored the file path