"URI malformed" error hanppen when proxy.password contains special characters like "%",etc

[dacuotecuo]

source code hpagent
/index.js L30:

if (this.proxy.username || this.proxy.password) {
      const base64 = Buffer.from(`${decodeURIComponent(this.proxy.username || '')}:${decodeURIComponent(this.proxy.password || '')}`).toString('base64')
      requestOptions.headers['proxy-authorization'] = `Basic ${base64}`
    }

decodeURIComponent('%') throws errors like 'Uncaught URIError: URI malformed'