Contao Manager - Kann Pakete nicht mehr installieren

[Grossvater]

Hallo liebe Community,
ich habe lokal unter Mamp Pro eine C 4.9.2. Installation eingerichtet.
Nun woltle ich das Paket WOW.js installieren.

Es erschien eine Fehlermeldung:

$ /Applications/MAMP/bin/php/php7.4.2/bin/php -q /Applications/MAMP/htdocs/bw/web/contao-manager.phar.php composer require inspiredminds/contao-wowjs --no-suggest --no-update --no-scripts --prefer-stable --sort-packages --no-ansi --no-interaction

Using version ^1.0 for inspiredminds/contao-wowjs
/Applications/MAMP/htdocs/bw/composer.json has been updated

# Process terminated with exit code 0
# Result: OK


> Resolving dependencies using Composer Cloud v2.2.7

# Job ID NzsIXAdmBQ2gCdPMTLMztiaDBAJONliaX4mab7JFZcs6StvmN1VbfZ6jUsw80XZxEUh4eN7yY27rT completed in 31 seconds
# Memory usage: 440.42MB (peak: 2120.32MB), time: 29.59s.

$ /Applications/MAMP/bin/php/php7.4.2/bin/php -q /Applications/MAMP/htdocs/bw/web/contao-manager.phar.php composer install --prefer-dist --no-dev --no-progress --no-suggest --no-ansi --no-interaction --optimize-autoloader

InvalidArgumentException: Config file "/Applications/MAMP/htdocs/bw/contao-manager/composer-install.set.json" does not exist. in phar:///Applications/MAMP/htdocs/bw/web/contao-manager.phar.php/api/Process/AbstractProcess.php:56
Stack trace:
#0 phar:///Applications/MAMP/htdocs/bw/web/contao-manager.phar.php/api/Process/ProcessRunner.php(185): Contao\ManagerApi\Process\AbstractProcess::readConfig('/Applications/M...')
#1 phar:///Applications/MAMP/htdocs/bw/web/contao-manager.phar.php/api/Process/ProcessRunner.php(116): Contao\ManagerApi\Process\ProcessRunner->loadConfig()
#2 phar:///Applications/MAMP/htdocs/bw/web/contao-manager.phar.php/api/Process/ProcessRunner.php(61): Contao\ManagerApi\Process\ProcessRunner->wait(1)
#3 phar:///Applications/MAMP/htdocs/bw/web/contao-manager.phar.php/api/Command/ProcessRunnerCommand.php(46): Contao\ManagerApi\Process\ProcessRunner->run()
#4 phar:///Applications/MAMP/htdocs/bw/web/contao-manager.phar.php/vendor/symfony/console/Command/Command.php(255): Contao\ManagerApi\Command\ProcessRunnerCommand->execute(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#5 phar:///Applications/MAMP/htdocs/bw/web/contao-manager.phar.php/vendor/symfony/console/Application.php(1030): Symfony\Component\Console\Command\Command->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#6 phar:///Applications/MAMP/htdocs/bw/web/contao-manager.phar.php/vendor/symfony/console/Application.php(272): Symfony\Component\Console\Application->doRunCommand(Object(Contao\ManagerApi\Command\ProcessRunnerCommand), Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#7 phar:///Applications/MAMP/htdocs/bw/web/contao-manager.phar.php/api/ApiApplication.php(70): Symfony\Component\Console\Application->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#8 phar:///Applications/MAMP/htdocs/bw/web/contao-manager.phar.php/vendor/symfony/console/Application.php(148): Contao\ManagerApi\ApiApplication->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#9 phar:///Applications/MAMP/htdocs/bw/web/contao-manager.phar.php/api/console(86): Symfony\Component\Console\Application->run(Object(Symfony\Component\Console\Input\ArgvInput))
#10 /Applications/MAMP/htdocs/bw/web/contao-manager.phar.php(57): require('phar:///Applica...')
#11 {main}
# Process terminated with exit code 143
# Result: Termination (request to terminate) [SIGTERM]


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### Der Hintergrundprozess wurde unerwartet beendet ###

Ich erhalte diese Fehlermeldung immer wenn ich versuche irgendein Paket zu installieren. Egal welches.

PHP 7.4.2
MYSQL: 5.7.26
Contao Manager: 1.2.4

[Grossvater]

Update:
ich habe folgende Datein im Oder contao-manager/ gelöscht:
composer-install.get.json
composer-install.err.log

Danach habe ich den Cache gelöscht.

Siehe da, es funktioniert