batchMatMul error

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TensorFlow.js version

"@tensorflow/tfjs": "^0.12.4",
"@tensorflow/tfjs-core": "^0.12.12",
"@tensorflow/tfjs-node": "^0.1.11",

Describe the problem or feature request

I was using normali tensorflow JS on my chatbot but Today when I try to install again and run I got this erro:

TypeError: backend.batchMatMul is not a function
    at environment_1.ENV.engine.runKernel.$a (C:\Users\Ranieri\Documents\Projetos\Node Js\TensorFlowJS\node_modules\@tensorflow\tfjs-core\dist\ops\matmul.js:60:86)
    at C:\Users\Ranieri\Documents\Projetos\Node Js\TensorFlowJS\node_modules\@tensorflow\tfjs\node_modules\@tensorflow\tfjs-core\dist\engine.js:115:26
    at Engine.scopedRun (C:\Users\Ranieri\Documents\Projetos\Node Js\TensorFlowJS\node_modules\@tensorflow\tfjs\node_modules\@tensorflow\tfjs-core\dist\engine.js:95:23)
    at Engine.runKernel (C:\Users\Ranieri\Documents\Projetos\Node Js\TensorFlowJS\node_modules\@tensorflow\tfjs\node_modules\@tensorflow\tfjs-core\dist\engine.js:113:14)
    at matMul_ (C:\Users\Ranieri\Documents\Projetos\Node Js\TensorFlowJS\node_modules\@tensorflow\tfjs-core\dist\ops\matmul.js:60:40)
    at Object.matMul (C:\Users\Ranieri\Documents\Projetos\Node Js\TensorFlowJS\node_modules\@tensorflow\tfjs-core\dist\ops\operation.js:23:29)
    at Object.dot (C:\Users\Ranieri\Documents\Projetos\Node Js\TensorFlowJS\node_modules\@tensorflow\tfjs-layers\dist\backend\tfjs_backend.js:215:24)
    at C:\Users\Ranieri\Documents\Projetos\Node Js\TensorFlowJS\node_modules\@tensorflow\tfjs-layers\dist\layers\core.js:142:28
    at C:\Users\Ranieri\Documents\Projetos\Node Js\TensorFlowJS\node_modules\@tensorflow\tfjs\node_modules\@tensorflow\tfjs-core\dist\engine.js:85:22
    at Engine.scopedRun (C:\Users\Ranieri\Documents\Projetos\Node Js\TensorFlowJS\node_modules\@tensorflow\tfjs\node_modules\@tensorflow\tfjs-core\dist\engine.js:95:23)
    at Engine.tidy (C:\Users\Ranieri\Documents\Projetos\Node Js\TensorFlowJS\node_modules\@tensorflow\tfjs\node_modules\@tensorflow\tfjs-core\dist\engine.js:84:21)
    at Object.Environment.tidy (C:\Users\Ranieri\Documents\Projetos\Node Js\TensorFlowJS\node_modules\@tensorflow\tfjs-core\dist\environment.js:45:35)
    at Dense.call (C:\Users\Ranieri\Documents\Projetos\Node Js\TensorFlowJS\node_modules\@tensorflow\tfjs-layers\dist\layers\core.js:139:28)
    at C:\Users\Ranieri\Documents\Projetos\Node Js\TensorFlowJS\node_modules\@tensorflow\tfjs-layers\dist\engine\topology.js:408:36
    at Object.nameScope (C:\Users\Ranieri\Documents\Projetos\Node Js\TensorFlowJS\node_modules\@tensorflow\tfjs-layers\dist\common.js:25:19)
    at Dense.Layer.apply (C:\Users\Ranieri\Documents\Projetos\Node Js\TensorFlowJS\node_modules\@tensorflow\tfjs-layers\dist\engine\topology.js:392:25)

My old project is running great, the same code.

My code: https://github.com/ran-j/ChatBotNodeJS/blob/master/routes/index.js#L325

[annxingyuan]

Hey,

Thanks for filing this. I think the issue might be that the package tfjs currently needs tfjs-core version 0.12.15, but the latest version of tfjs-core is 0.12.16. Our team will resolve this discrepancy soon, but in the meantime, could you confirm that you’ve installed tfjs-core version 0.12.16? And if so, could you downgrade to 0.12.15 and see whether that resolves the issue?

Sorry - I know this is a hacky workaround - I will let you know once tfjs and tfjs-core are back in sync 😃

[hunterdowns]

Thanks! That did it.

One thing to note is that I had just been using npm rather than yarn and that was asking me to use put an explicit dependency on tfjs-core in my package.json. Even after changed my package to match what you had suggested it was still asking for the tfjs-core dependency. If I put that back it, it failed as before.

Following exactly what you said, I removed that explicit dependency, switched to yarn, and now it’s working.

Thanks again!