I have deployed smart contract which buys token using 0x Settler. I am seeing an error 
```shortMessage: 'contract runner does not support calling'```

Here is the process
 * call 0x API and get quote for swapping ETH for TokenA
 * response has `transaction.data` which is passed to below 'swapCallData' . Pass Settler address and TokenA address

you will see error 
```shortMessage: 'contract runner does not support calling'```

@matchaxyz do you have updated docs ?

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I have deployed smart contract which buys token using 0x Settler. I am seeing an error 
```shortMessage: 'contract runner does not support calling'```

Here is the process
 * call 0x API and get quote for swapping ETH for TokenA
 * response has `transaction.data` which is passed to below 'swapCallData' . Pass Settler address and TokenA address

you will see error 
```shortMessage: 'contract runner does not support calling'```

@matchaxyz do you have updated docs ? 

https://bitbucket.org/blockx20/workspace/snippets/k7b6na

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that error usually means that your contract runner doesn't support sending transactions (ie. you're not using a signer)

are you getting the error when interfacing using ethers.js or similar library?

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when you pass `swapCallData` to `swapTarget` (0x settler) the low-level call is executed with the runner in charge of the contract interaction, which will fail if it doesn't have a valid signer

trying to do it with just a provider or voidSigner will pop that error