Laravel 8 update for Laraship composer update error

Problem 1

– Root composer.json requires phpunit/phpunit ^9.0, ^7.0|^8.0, found phpunit/phpunit[dev-master, dev-issue-4502/php-8-attributes, 3.7.0, …, 3.7.38, 4.0.0, …, 4.8.36, 5.0.0, …, 5.7.27, 6.0.0, …, 6.5.14, 7.0.0, …, 7.5.20, 8.0.0, …, 8.5.x-dev, 9.0.0, …, 9.5.x-dev, 10.0.x-dev (alias of dev-master)] but it does not match the constraint.

Problem 2

– Root composer.json requires constantcontact/constantcontact 3.0.0-alpha -> satisfiable by constantcontact/constantcontact[3.0.0-alpha].

– constantcontact/constantcontact 3.0.0-alpha requires guzzlehttp/guzzle ^6.1.1 -> found guzzlehttp/guzzle[6.1.1, …, 6.5.5] but it conflicts with your root composer.json require (^7.0.1).

Problem 3

– php-http/guzzle6-adapter[v2.0.0, …, v2.0.2] require guzzlehttp/guzzle ^6.0 -> found guzzlehttp/guzzle[6.0.0, …, 6.5.5] but it conflicts with your root composer.json require (^7.0.1).

– Root composer.json requires php-http/guzzle6-adapter ^2.0 -> satisfiable by php-http/guzzle6-adapter[v2.0.0, v2.0.1, v2.0.2].

I am puzzled about the phpunit issue as version 9.5 is available on Github. It even seems to be saying that it is finding the 9.x version yet still complains that the constraint isn’t met. Can you advise? And then there is the guzzlehttp issue, but one thing at a time, eh? Thank you in advance! -mike