Package fkooman/guzzle-bearer-auth-plugin is abandoned, you should avoid using it. No replacement was suggested.
Package fkooman/oauth-common is abandoned, you should avoid using it. No replacement was suggested.
Package fkooman/oauth-client is abandoned, you should avoid using it. Use fkooman/oauth2-client instead.
Package guzzle/guzzle is abandoned, you should avoid using it. Use guzzlehttp/guzzle instead.
Do you will update oAuth to 2.0 and Guzzle Http ?
Composer report: