can't install Plugin v4.8.1

[sw-health]

Hello,
I tried to install the Mailchimp Plugin via the Contao Manager (v 1.6.3) within our Contao Installation (v 4.13.26).
I got the following error messages:

$ /usr/local/php81/bin/php -q -dmax_execution_time=0 -dmemory_limit=-1 -ddisplay_errors=0 -ddisplay_startup_errors=0 -derror_reporting=0 -dallow_url_fopen=1 -ddisable_functions= -ddate.timezone=Europe/Berlin /CMS/contao/.../contao4/public/contao-manager.phar.php composer require oneup/contao-mailchimp --no-update --no-scripts --prefer-stable --sort-packages --no-ansi --no-interaction

Info from https://repo.packagist.org: #StandWithUkraine
Using version ^4.8 for oneup/contao-mailchimp
/var/www/vhosts/hosting169517.ae85e.netcup.net/httpdocs/CMS/contao/sanawork/contao4/composer.json has been updated

Process terminated with exit code 0

Result: OK

Resolving dependencies using Composer Cloud v3.6.0-1-g9d9036c

[7.4MiB/0.18s] Loading composer repositories with package information
[67.1MiB/8.43s] Updating dependencies
[82.7MiB/8.60s] Your requirements could not be resolved to an installable set of packages.
[82.7MiB/8.60s]
Problem 1
- oneup/mailchimp-api-v3[2.7.0, ..., 2.7.1] require guzzlehttp/guzzle ^7.4.5 -> found guzzlehttp/guzzle[7.4.5, ..., 7.7.0] but these were not loaded, likely because it conflicts with another require.
- oneup/contao-mailchimp[4.8.0, ..., 4.8.1] require oneup/mailchimp-api-v3 ^2.7 -> satisfiable by oneup/mailchimp-api-v3[2.7.0, 2.7.1].
- Root composer.json requires oneup/contao-mailchimp ^4.8 -> satisfiable by oneup/contao-mailchimp[4.8.0, 4.8.1].

[82.7MiB/8.60s] Running update with --no-dev does not mean require-dev is ignored, it just means the packages will not be installed. If dev requirements are blocking the update you have to resolve those problems.
[38.5MiB/8.62s] Memory usage: 38.54MB (peak: 191.83MB), time: 8.63s.
[38.5MiB/8.62s] Finished Composer Cloud resolving.

Cloud Job ID flJIWXPgDxUnAWilBmJUsFwYiGBlDV83jcRQE4pyRPNo7aGnHZwnJj1TV3Xfa5QU4gXqQnf47B3MotztFgBdN1wmQUNsV3yclS9o failed

Could you help me out and fix this issue?
Thank you very much.

[David Greminger]

Problem 1

• oneup/mailchimp-api-v3[2.7.0, ..., 2.7.1] require guzzlehttp/guzzle ^7.4.5 -> found guzzlehttp/guzzle[7.4.5, ..., 7.7.0] but these were not loaded, likely because it conflicts with another require.

Some other package does require guzzlehttp/guzzle in a different version and therefore Composer cannot solve the requirements.

If you're able to run Composer on command line, you could try following command: composer why guzzlehttp/guzzle

This should output the reason, why guzzlehttp/guzzle is already installed in a different version.

I don't know how to figure that out with the Contao Manager, as I never used it.

[David Greminger]

But there is nothing we can fix on our side so far.