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    cds-amal commented #4306
Elementa | NFT Novel & P2E Game

$ truffle run verify Rex --network rinkeby
Verifying Rex
Already Verified: https://rinkeby.etherscan.io/address/0x1dCd1EBd161e21e9Ab5f8ca669E77C247DD81eCA#code
Successfully verified 1 contract(s).

^ But this is not our Rex contract, it is just the proxy...


Hello all! Since a few weeks I have the problem that my truffle console crashes after a few minutes. Today it's only seconds until the console crashes. It's running agains ganache CLI, but I have the same problem with GANACHE app. It's both on Windows WSL2 and MacOS. Does anyone know this problem and may point me to a solution?

Ganache CLI v6.12.2 (ganache-core: 2.13.2)
Truffle v5.4.21 (core: 5.4.21)
Solidity - 0.8.6 (solc-js)
Node v16.9.1
Web3.js v1.5.3

truffle(development)> Error: Unhandled error. ({ code: -32000, message: 'header not found' })
    at new NodeError (node:internal/errors:371:5)
    at Web3ProviderEngine.emit (node:events:383:17)
    at Web3ProviderEngine.emit (node:domain:475:12)
8 replies
Hey guys, I am trying to deploy erc20 to mainnet. But it always failed after block number 50, even I set it to 4000 in truffle.config.js. How do I increase the block number exactly? Thanks
1 reply
Hi everyone, I have some trouble installing truffle on my windows.Can someone please help me . thanks
link is below.
1 reply
I'm following this guide for debugging smart contracts: https://www.trufflesuite.com/guides/debugging-a-smart-contract
I reached the point where I'm triggering an infinite loop, and I'm supposed to see an error about running out of gas, but instead the program just hangs there after eth_estimateGas is printed to the logs.
The only thing I did differently from the guide is updating the required compiler version in the sol file. Could that be the issue? Running on Windows 10, by the way.
1 reply
Im trying to install truffle on windows but get a cache miss and I noticed it was fetching a tgz file from npmjs even though its windows. I have node and git installed and when I use npm list -g it is only giving the package names instead of the full tree you would expect to see. Anyone run into this?
i don't know this . please help me
Become Rare
Hi! How can I call use --fetch-external programatically with this? https://github.com/trufflesuite/truffle/tree/develop/packages/debugger
Thoufeek Baber
helo..can anyone explain what is web3?
also can anyone recomend good tutorials on developing with truffle
web3 is a catch term for web apps that talk to a blockchain, run on a blockchain
I think take a look at https://www.trufflesuite.com/docs/truffle/quickstart to get started with truffle, but there are stacks of other tutorials available
George Kiknadze
I've got an issue with Polygon mainnet deployment
smart contract creation transaction is not taken by validators
any idea what could be an issue? Tried with various gas options but still nothing
⠸ Blocks: 88           Seconds: 184
Mac-Oya Makoya
Hie everyone. I discovered this thing today , accidentally actually.

ℹ 「wdm」: Compiled successfully.

I hope this will be a nice journey

Philip Scott
Hi folks - quick question, my organisation has a complicated scripted docker setup - one of which starts the ganache-cli docker image up. Is it possible to connect the nice GUI to an already-running server or am I stuck with figuring out the json-rpc to poke around in the blockchain it generates?
2 replies

Hello everyone, is there a way to debug step-by-step javascript test? Not the solidity calls with await debug(etc...)?
I am using Visual Studio Code.

Also, how can I debug an exception when Error - out of gas happens? (await debug in js is just skipped)


I am calling web3.currentProvider.send().

    const params = [permitParams, defaultAccount];
    const method = 'eth_signTypedData';

    var result = await web3.currentProvider.send({
    }, function(err, result) {

in a truffle test.

I get the following error:
'cannot sign data; no private key'

How can I test eth_signTypedData with truffle test?

Roberto Chan
Hello, I been playing with @drizzle/vue-plugin. Is there a way to get a call back or do wait for a cacheSend ?
hi people
I reinstalled OS recently, and I see I cannot add 2nd walle on metamask trough 12 words phrase, when I lock account and import trough prhase it deletes my previous wallet
and on Import (why unlocked) I only have option to import trough key or json
before I had multiple wallets imported trough 12 words..... what I'm doing wrong?
Hi, I am having an issue while deploying my smart contract, When I use the command "truffle compile" on my terminal, it gives me error which is "cannot find module babel-register" Can someone please help me? Thanks
Peter Kruty
Hi Folks, I found that hdwallet-provider could work in browser, but when I try to use it I get an error with missing Buffer
"ReferenceError: Buffer is not defined"
at Object../node_modules/@truffle/hdwallet-provider/node_modules/ethereumjs-util/dist/secp256k1v3-lib/der.js .
I understand this can be fixed with Buffer polyfill, I just don't know how exactly, I can't find webpack.config.js anywhere. Any hints?
Dan T
Hello, new developer here. I started a new project using the files from truffle pet shop tutorial as a base and I now want to upgrade to a later version of web3. What is the best way of doing this without breaking too many things?
Evan C Pease
Hi, I'm trying to deploy a contract to mainnet
The dry run shows gas fees that are well within what's in the wallet
but the deploy fails with insufficient funds
didn't find any sensible answers on initial google searches
any ideas?
Hi guys, I have a problem with a React Truffle Box. I deploy the contracts, the site runs I get a transaction but the gas is not set and no matter if I decline or change gas the number that should change does not
Wong Tao Zhe
Hi I'm a new developer here. I got a transaction exited with an error (status 0) when running truffle migrate --network rinkeby to upgrade my smart contract.
Any idea what's the issue? Thanks in advance
Priyanshu Rajput

Hi, I am having an issue while deploying my smart contract, When I use the command "truffle compile" on my terminal, it gives me error which is "cannot find module babel-register" Can someone please help me? Thanks

Same issue. Please help


Hello, I am new to blockchain and am trying to walk through the PetShop tutorial. I have deployed Hyperedger Besu on an AWS machine and am trying to migrate my contracts over there,
https://github.com/dappuniversity/nft but it keep failing. The output error is :Error: Deployment Failed

"Migrations" -- Returned error: The method eth_sendTransaction is not supported. Use eth_sendRawTransaction to send a signed transaction to Besu..1_initial_migration.js

Deploying 'Migrations'

Error: Deployment Failed

"Migrations" -- Returned error: The method eth_sendTransaction is not supported. Use eth_sendRawTransaction to send a signed transaction to Besu..

at /usr/local/lib/node_modules/truffle/build/webpack:/packages/deployer/src/deployment.js:365:1
at processTicksAndRejections (internal/process/task_queues.js:95:5)
at Migration._deploy (/usr/local/lib/node_modules/truffle/build/webpack:/packages/migrate/Migration.js:70:1)
at Migration._load (/usr/local/lib/node_modules/truffle/build/webpack:/packages/migrate/Migration.js:56:1)
at Migration.run (/usr/local/lib/node_modules/truffle/build/webpack:/packages/migrate/Migration.js:217:1)
Does anyone has any problems with avalanche deployments? I am having the same issue as the person here trufflesuite/truffle#4028 but updating the truffle hd provider doesn't work in my case
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Eladio Robles

I just Tried to deploy Sushiswap fork in Harmony it shows the following error:
Error: Returned error: intrinsic gas too low

I just tried to modify the Gas limit and Gas Price but remains the same error

Lucas Vazquez
Hi! When I use truffle console it automatically loads contracts from the current directory, is there a command to load contracts on other directories?
Eladio Robles
Hi Lucas,
truffle console and then truffle migrate —network xxx
hi how can help me? when i try truffle compile , i get Error: ENOENT: no such file or directory, open '.secret'