Truffle Error: The requested contract was not found. Make sure the source code is available for compilation

Support Upgrades
1

Trying to deploy Upgradeable contract i get an error.
Also i get strange warnings during the compilation, but i don’t have any duplicates in my truffle project.
I didn’t catch such problems before.

:1234: Code to reproduce

Error: The requested contract was not found. Make sure the source code is available for compilation

> Duplicate contract names found for IAirdrop.
> This can cause errors and unknown behavior. Please rename one of your contracts.

> Duplicate contract names found for IERC20Mintable.
> This can cause errors and unknown behavior. Please rename one of your contracts.

> Duplicate contract names found for IMasterChief.
> This can cause errors and unknown behavior. Please rename one of your contracts.

:computer: Environment

Truffle v5.4.1 (core: 5.4.1)
Solidity - 0.8.4 (solc-js)
Node v14.17.0
Web3.js v1.4.0
@openzeppelin/truffle-upgrades 1.8.0
@openzeppelin/contracts-upgradeable 4.2.0

2

add the source code to your post so we can see the problem

1 Like
3

Try cleaning your artifacts directory. If it doesn’t help please share a repository where we can reproduce the issue.

This is related to some shortcomings of Truffle. The Upgrades plugin for Hardhat will not have the same issue.

4

Deleted build directory multiple times. Nothing ve changed. But i can 't share my repo because it’s closed as comercial project

5

Has anything changed in your Solidity code since you started running into this error?

6

What is this so called short coming?

It works ok until I start to inherit another local solidity file.
If I stop inheriting anything locally, the deployProxy works.
Everything is using inheriting from upgradeable contracts except for when it is inheriting something local, but those are also inheriting upgradeable contracts.
I have tried deleing the abi jsons folder which didn't help. I don't know where is the build folder.
When I use truffle compile --all && truffle migrate --reset I get "Artifacts are from different compiler runs"
I tried to declare all the contracts in the main contract folder but I get another error: "Cannot read property 'layout' of undefined".
Any help is appreciated! tia.

Truffle v5.4.1
Solidity v0.8.9
Node v16.5.0
Web3 v1.0.0
truffle-upgrades v^1.12.0
Windows 10

7

@Godwin Can you share a repo where we could reproduce the issue?

8

I was able to get it to work after reinstallign truffle-upgrades.