elgg_live-chat plugin get below error

php /usr/bin/composer.phar install

i got below error 


Package guzzle/parser is abandoned, you should avoid using it. Use guzzle/guzzle instead.
Package guzzle/common is abandoned, you should avoid using it. Use guzzle/guzzle instead.
Package guzzle/stream is abandoned, you should avoid using it. Use guzzle/guzzle instead.
Package guzzle/http is abandoned, you should avoid using it. Use guzzle/guzzle instead.

 

Thanks