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When I paste my contract into Remix and try to Create it, I occasionally get:

callback contain no result Error: SyntaxError: Unexpected token < in JSON at position 0

If I click create a few more times, it usually works and the Metamask popup appears.

Then, sometimes the transaction will succeed, but sometimes Metamask will give me the same error Unexpected token < in JSON at position 0.

But sometimes it works. All with the same code pasted into the Remix window. What could be going wrong? I'm on Rinkeby.

It always works when using the JVM.

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That's the error that MetaMask reports when it gets HTML instead of JSON from its backend provider.

AKA when Infura has a 405 (overwhelmed) error. This can happen when the Infura network has a sudden and surprising surge of traffic.

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