AWS Lambda Exception: Unable to load shared library 'libSkiaSharp'

Aspose.Words Product Family
1

When calling document.Save() as PNG in an AWS Lambda the code fails with the below exception

{
  "errorType": "AggregateException",
  "errorMessage": "One or more errors occurred. (The type initializer for '\u0002  ' threw an exception.)",
  "stackTrace": [
    "at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)",
    "at lambda_method(Closure , Stream , Stream , LambdaContextInternal )"
  ],
  "cause": {
    "errorType": "TypeInitializationException",
    "errorMessage": "The type initializer for '\u0002  ' threw an exception.",
    "stackTrace": [
      "at \b​  .\u0002()",
      "at \b​  .\u0002(Stream \u0002)",
      "at \u0005​  .\u0005​   ​​\u0002(\u0003    \u0002)",
      "at \u000f   .\u000f    ​​\u0002(\u0003    \u0002)",
      "at Aspose.Words.Document.\u0002(\u0003    \u0002, SaveOptions \u0003)",
      "at Aspose.Words.Document.\u0002(Stream \u0002, String \u0003, SaveOptions \u0005)",
      "at OfficeDocToImage.Function.ConvertWordToImages(AmazonS3Client client, GetObjectResponse response, String s3Folder, String s3Bucket, OfficeDocToImageRequest request) in /.../udmOfficeDocToImage/src/OfficeDocToImage/Function.cs:line 148",
      "at OfficeDocToImage.Function.FunctionHandler(APIGatewayProxyRequest apiRequest, ILambdaContext context) in /.../udmOfficeDocToImage/src/OfficeDocToImage/Function.cs:line 72"
    ],
    "cause": {
      "errorType": "TypeInitializationException",
      "errorMessage": "The type initializer for 'SkiaSharp.SKImageInfo' threw an exception.",
      "stackTrace": [
        "at SkiaSharp.SKBitmap..ctor(Int32 width, Int32 height, Boolean isOpaque)",
        "at \u0002  ..cctor()"
      ],
      "cause": {
        "errorType": "DllNotFoundException",
        "errorMessage": "Unable to load shared library 'libSkiaSharp' or one of its dependencies. In order to help diagnose loading problems, consider setting the LD_DEBUG environment variable: liblibSkiaSharp: cannot open shared object file: No such file or directory",
        "stackTrace": [
          "at SkiaSharp.SkiaApi.sk_colortype_get_default_8888()",
          "at SkiaSharp.SKImageInfo..cctor()"
        ]
      }
    }
  },
  "causes": [
    {
      "errorType": "TypeInitializationException",
      "errorMessage": "The type initializer for '\u0002  ' threw an exception.",
      "stackTrace": [
        "at \b​  .\u0002()",
        "at \b​  .\u0002(Stream \u0002)",
        "at \u0005​  .\u0005​   ​​\u0002(\u0003    \u0002)",
        "at \u000f   .\u000f    ​​\u0002(\u0003    \u0002)",
        "at Aspose.Words.Document.\u0002(\u0003    \u0002, SaveOptions \u0003)",
        "at Aspose.Words.Document.\u0002(Stream \u0002, String \u0003, SaveOptions \u0005)",
        "at OfficeDocToImage.Function.ConvertWordToImages(AmazonS3Client client, GetObjectResponse response, String s3Folder, String s3Bucket, OfficeDocToImageRequest request) in /.../udmOfficeDocToImage/src/OfficeDocToImage/Function.cs:line 148",
        "at OfficeDocToImage.Function.FunctionHandler(APIGatewayProxyRequest apiRequest, ILambdaContext context) in /.../udmOfficeDocToImage/src/OfficeDocToImage/Function.cs:line 72"
      ],
      "cause": {
        "errorType": "TypeInitializationException",
        "errorMessage": "The type initializer for 'SkiaSharp.SKImageInfo' threw an exception.",
        "stackTrace": [
          "at SkiaSharp.SKBitmap..ctor(Int32 width, Int32 height, Boolean isOpaque)",
          "at \u0002  ..cctor()"
        ],
        "cause": {
          "errorType": "DllNotFoundException",
          "errorMessage": "Unable to load shared library 'libSkiaSharp' or one of its dependencies. In order to help diagnose loading problems, consider setting the LD_DEBUG environment variable: liblibSkiaSharp: cannot open shared object file: No such file or directory",
          "stackTrace": [
            "at SkiaSharp.SkiaApi.sk_colortype_get_default_8888()",
            "at SkiaSharp.SKImageInfo..cctor()"
          ]
        }
      }
    }
  ]
}
2

@deanvniekerk

Please note that .NET Standard 2.0 version of Aspose.Words uses SkiaSharp to deal with graphics. SkiaSharp is a cross-platform 2D graphics API for .NET platforms based on Google’s Skia Graphics Library.

Could you please share your working environment e.g operating system, .NET version etc.

3

Hi,

The code is running in an AWS lambda, the environment is an Amazon Linux image.

4

@deanvniekerk

You need to add reference of SkiaSharp.NativeAssets.Linux to your application. We suggest you please read the following article.

How to Run Aspose.Words Docker