my "yarn" doesnt work properly

[LeeJianXing]

When i run yarn it show up like below.

john@JohnD:~/folder/hardhat-fund-me-fcc$ yarn
00h00m00s 0/0: : ERROR: There are no scenarios; must have at least one.

But if i run this commad first export NVM_DIR="$HOME/.nvm"[ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh"
then yarn. I can use yarn

john@JohnD:~/folder/hardhat-fund-me-fcc$ export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
john@JohnD:~/folder/hardhat-fund-me-fcc$ yarn
yarn install v1.22.15
warning package.json: No license field
warning No license field
[1/4] Resolving packages...
success Already up-to-date.
Done in 0.18s.

So my problem is
1)I dunno why i need to run the "export xxxxxx" commmad only i can use yarn
2)Everytime i closed visual studio code and open again i need to run the "export xxxx" first only then i can use yarn

Maybe is i messing around with the files stuff like delete all files and all its stuff inside (i created a new one later ) ?

[aaankeet]

@LeeJianXing It looks like your yarn didn't installed properly and yarn version is way older.

Try These Steps

 1. sudo apt remove yarn
 2.  sudo apt install curl
 3. curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
 4. sudo apt-get update && sudo apt-get install yarn
 5. yarn --version

[LeeJianXing]

I followed your step and this is my yarn version

john@JohnD:~/folder/hardhat-fund-me-fcc$ yarn --version
0.32+git

is it correct ?

[aaankeet]

@LeeJianXing no that's way older current latest version is v3.6.0
Run this command in your terminal to set latest version
yarn set version latest

[astr0-g]

You could use npm or npx instead, tho.

[LeeJianXing]

thanks @astr0-g @aaankeet , i solved it after i random trying few of the solution from multiple sites