I found a discord bot source on github, i try to start it but i got an error. Anyone can help please?

Code: Click

Error:

TypeError [CLIENT_MISSING_INTENTS]: Valid intents must be provided for the Client. at Client._validateOptions (C:\Users\Krisz\Desktop\CalypsoBot-develop\node_modules\discord.js\src\client\Client.js:544:13) at new Client (C:\Users\Krisz\Desktop\CalypsoBot-develop\node_modules\discord.js\src\client\Client.js:73:10) at new Client (C:\Users\Krisz\Desktop\CalypsoBot-develop\src\Client.js:20:5) at Object. (C:\Users\Krisz\Desktop\CalypsoBot-develop\app.js:17:16) at Module._compile (internal/modules/cjs/loader.js:1072:14) at Object.Module._extensions..js (internal/modules/cjs/loader.js:1101:10) at Module.load (internal/modules/cjs/loader.js:937:32) at Function.Module._load (internal/modules/cjs/loader.js:778:12) at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:76:12) at internal/main/run_main_module.js:17:47 { [Symbol(code)]: 'CLIENT_MISSING_INTENTS' }