I believe these two issues on the onnx.js forums explain the problem best.

  
      github.com/microsoft/onnxjs
  
  
    
  
	  
  

  
    
      Feature Request - Dealing with int64 in the exported ONNX model 40
    

    
      
        opened 
        
          
        
        Oct 7, 2020
      
      


      
        
          
          snakers4
        
      
    
  



  Hi,
Background
We are trying to run models from silero-models via onnx.js.
We have had various issues with ONNX export, but most of them...





  
  
    
    
  
  



  
      github.com/microsoft/onnxjs
  
  
    
  
	  
  

  
    
      onnx model error: int64 is not supported 46
    

    
      
        opened 
        
          
        
        Jul 17, 2019
      
      


      
        
          
          aohan237
        
      
    
  



  i use a model from https://github.com/onnx/models/tree/master/vision/object_detection_segmentation/mask-rcnn mask-rcnn
and load the model in onnxjs
just follow the instructions.
const model = new onnx.InferenceSession();
await model.loadModel("./mask_rcnn_R_50_FPN_1x.onnx");
but errors...





  
  
    
    
  
  


I have replied there with a link to this issue. I hope it gets picked up on the onnxjs side