Questions tagged [truffle-contract]
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319 questions
0 votes
1 answer
117 views
"ContractExecutionError: Error happened while trying to execute a function inside a smart contract" after calling it via mint button
Contract Code: // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol"; import "@openzeppelin/contracts/...
0 votes
1 answer
30 views
Smart function calling not working in python, even though works in truffle dev environment
I am trying to call an AddDeviceOwner function from python. Somehow it is not working as nothing returns, not even an error. I tried the same in the Truffle Dev console and it works. Can anyone share ...
- 21
0 votes
1 answer
51 views
Controlling Contract
Using truffle and makes me use truffle console but I dont want to and wouldnt either. Is there any other way interact with contracts and controlling their propreties and everything with an app or ...
- 61
0 votes
2 answers
151 views
Transaction gets reverted when using send web3 function
I have a basic smart contract that sets the hash of a string and retrieves it along with verification. The contract works perfectly fine, but the issue is with the .send method of web3 that reverts ...
1 vote
0 answers
48 views
Deactivate clean-room environment in truffle
Everything is in the question, does anyone have a way to prevent the redeployment of the contract every time you run a test and keep using the same "contract" feature ? Edit : I've found it, ...
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1 vote
0 answers
42 views
Uncaught (in promise) TypeError: ProposalsRegistrationEndedEvent.watch is not a function
I was following an old Ethereum dapp tutorial to make a voting dapp. It uses truffle contract, web3js and ganache and when i access the pages via localhost i get the following error in the console: ...
- 11
2 votes
3 answers
897 views
why command Truffle init not creating Migrations.sol?
I created new folder in truffle with command truffle init version of truffle and others Truffle v5.5.30 (core: 5.5.30) Ganache v7.4.0 Solidity - 0.8.17 (solc-js) Node v16.16.0 Web3.js v1.7.4 but it ...
- 23
1 vote
0 answers
210 views
Error deploying contract via Truffle to Polygon mainnet
When I try deploying with command npx truffle migrate --config=truffle-config.js --network polygon, I get the following error. Error [ERR_UNHANDLED_ERROR]: Unhandled error. ([object Object]) at ...
- 138
1 vote
1 answer
33 views
Issue with Array of fixed count
What is the difference between using mapping and without mapping? can I declare the tickets variable with mapping? Ticket[TOTAL_TICKETS] public tickets; Here is the solidity smartcontract pragma ...
- 113
0 votes
1 answer
66 views
Getting an Invalid Address error when trying to interact with smart contract in truffle express box
I have a function where I insert patient's info into a mapping and it works perfectly fine on remix and in the truffle console. function createPatient (uint _SecretNum, string memory _name, uint _dob, ...
0 votes
1 answer
454 views
Verify that a method call is initiated from a specific Smart Contract
As my smart contract is >24k, I read that I need to break it into multiple (smaller) smart contracts. So, my current design is to have a Core contract that has all the data in arrays. This Core has ...
- 103
0 votes
0 answers
488 views
Uncaught (in promise) TypeError: myFunction.watch is not a function
I'm trying to develop my first DAPP based on this tutorial (https://livebook.manning.com/book/building-ethereum-dapps/chapter-12/) and I'm encountering some errors in the javascript part. In ...
- 1
1 vote
1 answer
466 views
truffle installed but not working
I'm using node version 12.20.2 and npm version 6.14.11 and installed truffle with cmd as administrator, the truffle framework version 5.5.12 has been installed but when I run any command in the vs ...
0 votes
1 answer
146 views
unable to install truffle
I'm trying to install truffle on node version 8.9.0 but it shows it has been installed and when I try to do anything on that, throws this error. C:\Users\com\AppData\Roaming\nvm\v8.9.0\node_modules\...
0 votes
1 answer
485 views
ERC721 is being minted to null address
Here is the contract code to mint ERC721 tokens: contract NFT is ERC721URIStorage, Ownable { mapping(uint256 => address) private _owners; mapping(address => uint256) private _balances; ...
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