0TTT0
  • Member for 3 years, 11 months
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Metamask – Trying to call a function on a non-contract address
2 votes

Make sure that you are connected to the proper network through Metamask, the network that the contract is deployed on.

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Truffle console doesn't work :Unexpected error: Cannot provision contracts while instantiating the console
2 votes

Do not pull your code again from GH. Do not reinstall npm. Delete build/contracts directory. This is not dangerous because it gets recreated during compilation.

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Duplicate events firing in a Web3 listener
1 votes

I still had this happen in March of 2019, I solved it by making a Set in my javascript and adding blockNumbers to it in my callback to ensure no duplicates were allowed.. var eventBlocks = new Set() ...

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Web3 .call not returning "valid value"
Accepted answer
1 votes

This all was easy to fix. The address that was being pointed to by MetaMask was not the valid address for this blockchain, so the return value was an error since fraud[0] didn't exist. I redeployed ...

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etherum.enable() not opening Metamask
Accepted answer
0 votes

I just needed to reload Metamask and everything started functioning as expected.

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geth Clique consensus skip empty blocks
0 votes

All you have to do is set period:0 in the genesis.json file to achieve this sealing behavior.

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Proof of authority reward mechanism
0 votes

The sealer does receive the transaction fee

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Private Chain Peering and Port Problem
0 votes

I had to open up 30303 on TCP for IPv4 not IPv6.

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What would be potential problems with building "private" Ethereum network on AWS?
0 votes

I believe that you can also set --maxpeers <n> with n being the size of your private network to keep intruders from accidentally or intentionally joining your network.

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Truffle compile and migrate not working
0 votes

Code was mostly correct, the following should compile. pragma solidity >=0.4.18; contract HelloWorld { function hi() public pure returns (string memory) { return ("Hello World"); ...

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