TypeError: Invalid comparator: pragmasolidity^0.6.6

[LordReya]

Hey guys! I started coding out of fun after finishing the course till lesson 14. For some reason I get this error here: TypeError: Invalid comparator: pragmasolidity^0.6.6

Can anyone tell me what exactly it means? That's the full error code:

lordreya@Lords-MacBook-Air DEX-Arbitrage-main Kopie 2 % yarn hardhat compile
yarn run v1.22.19
$ '/Users/lordreya/Documents/arbitrage bot/fb - testing/DEX-Arbitrage-main Kopie 2/node_modules/.bin/hardhat' compile
An unexpected error occurred:

TypeError: Invalid comparator: pragmasolidity^0.6.6
    at Comparator.parse (/Users/lordreya/Documents/arbitrage bot/fb - testing/DEX-Arbitrage-main Kopie 2/node_modules/hardhat/node_modules/semver/semver.js:794:11)
    at new Comparator (/Users/lordreya/Documents/arbitrage bot/fb - testing/DEX-Arbitrage-main Kopie 2/node_modules/hardhat/node_modules/semver/semver.js:777:8)
    at Range.<anonymous> (/Users/lordreya/Documents/arbitrage bot/fb - testing/DEX-Arbitrage-main Kopie 2/node_modules/hardhat/node_modules/semver/semver.js:975:12)
    at Array.map (<anonymous>)
    at Range.parseRange (/Users/lordreya/Documents/arbitrage bot/fb - testing/DEX-Arbitrage-main Kopie 2/node_modules/hardhat/node_modules/semver/semver.js:974:13)
    at Range.<anonymous> (/Users/lordreya/Documents/arbitrage bot/fb - testing/DEX-Arbitrage-main Kopie 2/node_modules/hardhat/node_modules/semver/semver.js:917:17)
    at Array.map (<anonymous>)
    at new Range (/Users/lordreya/Documents/arbitrage bot/fb - testing/DEX-Arbitrage-main Kopie 2/node_modules/hardhat/node_modules/semver/semver.js:916:40)
    at Function.intersects (/Users/lordreya/Documents/arbitrage bot/fb - testing/DEX-Arbitrage-main Kopie 2/node_modules/hardhat/node_modules/semver/semver.js:1543:8)
    at getCompilationJobCreationError (/Users/lordreya/Documents/arbitrage bot/fb - testing/DEX-Arbitrage-main Kopie 2/node_modules/hardhat/src/internal/solidity/compilation-job.ts:305:17)
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command. ``` 

There is not much info about it elsewhere sadly... Would appreciate the help!

[krakxn]

Send the repo please - as it seems like a big codebase, will be much easier for me to diagnose. Thank you

[LordReya]

Just solved it! It was because I changed the version of the node modules. That was a bad idea. Just reinstalled the node modules for Openzepelin, deleted the artifacts and cache, and voilà! It works perfect now. Thanks for the help!