# Truffle Error: The requested contract was not found. Make sure the source code is available for compilation **URL:** \ **Category:** Upgrades\ **Tags:** proxies\ **Created:** [July 19, 2021, 1:42pm UTC](https://forum.openzeppelin.com/t/truffle-error-the-requested-contract-was-not-found-make-sure-the-source-code-is-available-for-compilation/12746 "2021-07-19T13:42:01Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![temMartik](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.openzeppelin.com/temmartik/32/7724_2.png) [@temMartik](https://forum.openzeppelin.com/u/temMartik)\ **Post date:** [July 19, 2021, 1:42pm UTC](https://forum.openzeppelin.com/t/truffle-error-the-requested-contract-was-not-found-make-sure-the-source-code-is-available-for-compilation/12746/1 "2021-07-19T13:42:01Z")
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. #### 🔢 Code to reproduce ```auto Error: The requested contract was not found. Make sure the source code is available for compilation ``` ```auto > 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. ``` #### 💻 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 ---
**Author:** ![Lino\_The\_Creator](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.openzeppelin.com/lino_the_creator/32/7686_2.png) [@Lino\_The\_Creator](https://forum.openzeppelin.com/u/Lino_The_Creator)\ **Post date:** [July 19, 2021, 2:16pm UTC](https://forum.openzeppelin.com/t/truffle-error-the-requested-contract-was-not-found-make-sure-the-source-code-is-available-for-compilation/12746/2 "2021-07-19T14:16:53Z")
add the source code to your post so we can see the problem ---
**Author:** ![frangio](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.openzeppelin.com/frangio/32/15251_2.png) [@frangio](https://forum.openzeppelin.com/u/frangio)\ **Post date:** [July 19, 2021, 7:20pm UTC](https://forum.openzeppelin.com/t/truffle-error-the-requested-contract-was-not-found-make-sure-the-source-code-is-available-for-compilation/12746/3 "2021-07-19T19:20:48Z")
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. ---
**Author:** ![temMartik](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.openzeppelin.com/temmartik/32/7724_2.png) [@temMartik](https://forum.openzeppelin.com/u/temMartik)\ **Post date:** [July 20, 2021, 10:55am UTC](https://forum.openzeppelin.com/t/truffle-error-the-requested-contract-was-not-found-make-sure-the-source-code-is-available-for-compilation/12746/4 "2021-07-20T10:55:09Z")
Deleted build directory multiple times. Nothing ve changed. But i can 't share my repo because it’s closed as comercial project ---
**Author:** ![frangio](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.openzeppelin.com/frangio/32/15251_2.png) [@frangio](https://forum.openzeppelin.com/u/frangio)\ **Post date:** [July 20, 2021, 1:47pm UTC](https://forum.openzeppelin.com/t/truffle-error-the-requested-contract-was-not-found-make-sure-the-source-code-is-available-for-compilation/12746/5 "2021-07-20T13:47:59Z")
Has anything changed in your Solidity code since you started running into this error? ---
**Author:** ![Godwin](https://avatars.discourse-cdn.com/v4/letter/g/e9bcb4/32.png) [@Godwin](https://forum.openzeppelin.com/u/Godwin)\ **Post date:** [February 24, 2022, 10:12pm UTC](https://forum.openzeppelin.com/t/truffle-error-the-requested-contract-was-not-found-make-sure-the-source-code-is-available-for-compilation/12746/6 "2022-02-24T22:12:06Z")
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 ---
**Author:** ![frangio](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.openzeppelin.com/frangio/32/15251_2.png) [@frangio](https://forum.openzeppelin.com/u/frangio)\ **Post date:** [March 2, 2022, 8:07pm UTC](https://forum.openzeppelin.com/t/truffle-error-the-requested-contract-was-not-found-make-sure-the-source-code-is-available-for-compilation/12746/7 "2022-03-02T20:07:44Z")
@Godwin Can you share a repo where we could reproduce the issue? ---
**Author:** ![Godwin](https://avatars.discourse-cdn.com/v4/letter/g/e9bcb4/32.png) [@Godwin](https://forum.openzeppelin.com/u/Godwin)\ **Post date:** [March 3, 2022, 9:55am UTC](https://forum.openzeppelin.com/t/truffle-error-the-requested-contract-was-not-found-make-sure-the-source-code-is-available-for-compilation/12746/8 "2022-03-03T09:55:15Z")
I was able to get it to work after reinstallign truffle-upgrades.