Truffle Introduction

[AaronRene]

Hello Filip

I am having trouble installing V2.1.1 of Ganache. I already had Ganache installed so added another one instead of deleting. Did not work so I deleted the new version and still no luck.

I am using a Mac M1. This is what I get:

Error: Hardfork muirGlacier not set as supported in supportedHardforks
at Common.setHardfork (/node_modules/ganache-core/node_modules/ethereumjs-common/src/index.ts:112:13)
at new Common (/node_modules/ganache-core/node_modules/ethereumjs-common/src/index.ts:79:12)
at new VM (/node_modules/ganache-core/node_modules/ethereumjs-vm/dist/index.js:62:21)
at BlockchainDouble.createVMFromStateTrie (/node_modules/ganache-core/lib/blockchain_double.js:130:14)
at /node_modules/ganache-core/lib/blockchain_double.js:85:36
at /node_modules/ganache-core/lib/blockchain_double.js:191:5
at /node_modules/ganache-core/lib/database/leveluparrayadapter.js:129:14
at /node_modules/ganache-core/lib/database/leveluparrayadapter.js:24:16
at /node_modules/ganache-core/node_modules/level-sublevel/shell.js:101:15
at /node_modules/ganache-core/node_modules/level-sublevel/nut.js:121:19
at /node_modules/ganache-core/node_modules/encoding-down/index.js:51:21
at /node_modules/ganache-core/node_modules/cachedown/index.js:58:21
at ReadFileContext.callback (/node_modules/ganache-core/lib/database/filedown.js:26:14)
at FSReqWrap.readFileAfterOpen [as oncomplete] (fs.js:420:13)

Any suggestions appreciated.

[AaronRene]

I am having same issue. Works fine with latest version of Ganache. However this lesson calls for the older version… I am using an M1 Mac which may or may not be related

[AaronRene]

Hello Filip

I mad the changes to the truffle-config.js but still get an error as shown below:

Compiling your contracts…

Compiling ./contracts/HolaMundo.sol
Compiling ./contracts/Migrations.sol

Error: CompileError: /Users/bornfree/Documents/WEB DEV/advanced_ethereum_course/HolaoMundo/contracts/HolaMundo.sol:1:1: ParserError: Source file requires different compiler version (current compiler is 0.5.12+commit.7709ece9.Emscripten.clang - note that nightly builds are considered to be strictly less than the released version
pragma solidity 0.5.12
^ (Relevant source part starts here and spans across multiple lines).

Error: Truffle is currently using solc 0.5.12, but one or more of your contracts specify "pragma solidity 0.5.12
^ (Relevant source part starts here and spans across multiple lines).
".
Please update your truffle config or pragma statement(s).
(See https://truffleframework.com/docs/truffle/reference/configuration#compiler-configuration for information on
configuring Truffle to use a specific solc compiler version.)

Compilation failed. See above.
at Object.compile (/usr/local/lib/node_modules/truffle/build/webpack:/packages/workflow-compile/legacy/index.js:72:1)
Truffle v5.0.42 (core: 5.0.42)
Node v15.4.0

Suggestions?

[Deitrich_Brown]

[dan-i]

You forgot to post your migration

[dan-i]

Hi @AaronRene

Make sure that truffle is using the same Solidity version specified in your pragma statements.
Check this out and let me know: FAQ - How do change truffle version

[Deitrich_Brown]

I haven’t been able to compile the contract in my terminal. It keeps saying that it can’t find my “Helloworld” file.

[dan-i]

You haven’t code the migration for your contract that’s why is not migrating it.
Check this video out
https://academy.ivanontech.com/products/ethereum-smart-contract-programming-201/categories/1993907/posts/6667997

[Deitrich_Brown]

I haven’t gotten to that point yet. I’m still on the “Hello World” video. I haven’t compiled the contract yet so I can’t deploy it. That’s why I haven’t built the migration file.

[Ville]

I got these error messages when I’m trying to download truffle, what I should do?

[dan-i]

Hey @Ville

Other students had the same, issue.
Check this topic and follow the instructions: Setting up your environment

Regards,
Dani

[dan-i]

Hi @Deitrich_Brown

You are trying to deploy a new contract using Truffle, therefore you need to write a migration file.
Follow the video I send you last time and keep us posted.

Regards,
Dani

[Deitrich_Brown]

I tried to deploy the contract and this came up. I try compiling the contract and it says that it can’t find my contract.

[RCV]

When I run truffle init, it says command not found. I installed everything correctly heres screen shots.

[dan-i]

Hey @RCV

Try to npm install -g truffle, if you get an error sudo npm install -g truffle.
Also downgrade node: FAQ - How to downgrade Node.Js

Let me know if that helps.

Regards,
Dani

[RCV]

i down graded node js, when i enter the command -v. I get the following

[dan-i]

Hey @RCV

You use -v when you want to know the version of a program installed.
You need to state the program you want to know the version of

truffle -v gives you the version of Truffle installed on your machine.
node -v gives the version of Node.

[Jose_Hernandez]

Good day! How do I get the Atom text editor to automatically change the text color on my solidity code? Thanks!

Update: Installed language-solidity package in atom

[bulletfingers]

I was never able to figure this out.
Fortunately, I have a cheap windows 10 Lenovo laptop which I rarely used and kept. I pulled that out for this and it works perfectly.

[RCV]

This is what happens when I run sudo npm install -g truffle. It wont let me type my password for some reason.