parameters.yml geändert und »Systemwartung« > »Prod.-Cache erneuert

hallo;
ich wollte für das Formular die paramters.yml ändern und dann habe ich den Prod.-Cache erneuert.... nun habe ich überall weiße Seiten und komm nicht mehr ins Backend. :(
Über den Contao-Manager kommt folgenden Fehlermeldung:
composer install
$ /opt/RZphp74/bin/php-cli -q -dmax_execution_time=0 -dmemory_limit=-1 -dallow_url_fopen=1 -ddisable_functions= -ddate.timezone=CET /mnt/web016/b0/14/55825214/htdocs/contao4/web/contao-manager.phar.php composer install --prefer-dist --no-dev --no-progress --no-ansi --no-interaction --optimize-autoloader
Installing dependencies from lock file
Verifying lock file contents can be installed on current platform.
Warning: The lock file is not up to date with the latest changes in composer.json. You may be getting outdated dependencies. It is recommended that you run `composer update` or `composer update <package name>`.
Your lock file does not contain a compatible set of packages. Please run composer update.
Problem 1
- contao-components/installer is locked to version 1.3.1 and an update of this package was not requested.
- contao-components/installer 1.3.1 requires composer-plugin-api ^1.0 -> found composer-plugin-api[2.0.0] but it does not match the constraint.
Problem 2
- contao/manager-plugin is locked to version 2.7.1 and an update of this package was not requested.
- contao/manager-plugin 2.7.1 requires composer-plugin-api ^1.1 -> found composer-plugin-api[2.0.0] but it does not match the constraint.
Problem 3
- ocramius/package-versions is locked to version 1.4.1 and an update of this package was not requested.
- ocramius/package-versions 1.4.1 requires composer-plugin-api ^1.0.0 -> found composer-plugin-api[2.0.0] but it does not match the constraint.
Problem 4
- lib-xsl is present at version 1.1.26.0 and cannot be modified by Composer
- Only one of these can be installed: lib-libxslt[1.1.32], lib-xsl[1.1.26.0]. lib-libxslt replaces lib-xsl and thus cannot coexist with it.
- lib-libxslt is present at version 1.1.32 and cannot be modified by Composer
ocramius/package-versions only provides support for Composer 2 in 1.8+, which requires PHP 7.4.
If you can not upgrade PHP you can require composer/package-versions-deprecated to resolve this with PHP 7.0+.
You are using Composer 2, which some of your plugins seem to be incompatible with. Make sure you update your plugins or report a plugin-issue to ask them to support Composer 2.
# Process terminated with exit code 2
# Result: Misuse of shell builtins

Was kann ich jetzt tun????

Bin ehrlich gesagt sehr unerfahren und steh grad völlig auf dem Schlauch.
BITTE HELFT MIR!!!
Lieben Dank! Ich weiß nicht mehr weiter. Es war alles fertig. :(
Liebe Grüße
Gudrun

Du musst "Composer Update ausführen".

Siehe auch https://contao.org/de/news/contao-manager-1-4.html

Zitat:

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Zitat von Spooky

Du musst "Composer Update ausführen".

Siehe auch https://contao.org/de/news/contao-manager-1-4.html

---

Wenn ich das mache kann ich zwar ein Update ausführen komme danach aber zur Fehlermeldung:
HTTP-Anfrage für "DELETE api/task" fehlgeschlagen.
Der Server hat eine Antwort mit Status-Code 403 gesendet.Active task cannot be deleted

???
und beim Hintergrundprozeß folgendes:
$ /opt/RZphp74/bin/php-cli -q -dmax_execution_time=0 -dmemory_limit=-1 -dallow_url_fopen=1 -ddisable_functions= -ddate.timezone=CET /mnt/web016/b0/14/55825214/htdocs/contao4/web/contao-manager.phar.php composer install --prefer-dist --no-dev --no-progress --no-ansi --no-interaction --optimize-autoloader

Installing dependencies from lock file
Verifying lock file contents can be installed on current platform.
Warning: The lock file is not up to date with the latest changes in composer.json. You may be getting outdated dependencies. It is recommended that you run `composer update` or `composer update <package name>`.
Your lock file does not contain a compatible set of packages. Please run composer update.

Problem 1
- contao-components/installer is locked to version 1.3.1 and an update of this package was not requested.
- contao-components/installer 1.3.1 requires composer-plugin-api ^1.0 -> found composer-plugin-api[2.0.0] but it does not match the constraint.
Problem 2
- contao/manager-plugin is locked to version 2.7.1 and an update of this package was not requested.
- contao/manager-plugin 2.7.1 requires composer-plugin-api ^1.1 -> found composer-plugin-api[2.0.0] but it does not match the constraint.
Problem 3
- ocramius/package-versions is locked to version 1.4.1 and an update of this package was not requested.
- ocramius/package-versions 1.4.1 requires composer-plugin-api ^1.0.0 -> found composer-plugin-api[2.0.0] but it does not match the constraint.
Problem 4
- lib-xsl is present at version 1.1.26.0 and cannot be modified by Composer
- Only one of these can be installed: lib-libxslt[1.1.32], lib-xsl[1.1.26.0]. lib-libxslt replaces lib-xsl and thus cannot coexist with it.
- lib-libxslt is present at version 1.1.32 and cannot be modified by Composer

ocramius/package-versions only provides support for Composer 2 in 1.8+, which requires PHP 7.4.
If you can not upgrade PHP you can require composer/package-versions-deprecated to resolve this with PHP 7.0+.

You are using Composer 2, which some of your plugins seem to be incompatible with. Make sure you update your plugins or report a plugin-issue to ask them to support Composer 2.

# Process terminated with exit code 2
# Result: Misuse of shell builtins

Zitat:

---

Zitat von ggkoeln

Wenn ich das mache kann ich zwar ein Update ausführen komme danach aber zur Fehlermeldung:
HTTP-Anfrage für "DELETE api/task" fehlgeschlagen.
Der Server hat eine Antwort mit Status-Code 403 gesendet.Active task cannot be deleted

---

Lösche die Cookies der Domain und versuche es nochmal.

Zitat:

---

Zitat von Spooky

Lösche die Cookies der Domain und versuche es nochmal.

---

Leider kommt weiterhin eine Fehlermeldung:
$ /opt/RZphp74/bin/php-cli -q -dmax_execution_time=0 -dmemory_limit=-1 -dallow_url_fopen=1 -ddisable_functions= -ddate.timezone=CET /mnt/web016/b0/14/55825214/htdocs/contao4/web/contao-manager.phar.php composer install --prefer-dist --no-dev --no-progress --no-ansi --no-interaction --optimize-autoloader

Installing dependencies from lock file
Verifying lock file contents can be installed on current platform.
Warning: The lock file is not up to date with the latest changes in composer.json. You may be getting outdated dependencies. It is recommended that you run `composer update` or `composer update <package name>`.
Your lock file does not contain a compatible set of packages. Please run composer update.

Problem 1
- contao-components/installer is locked to version 1.3.1 and an update of this package was not requested.
- contao-components/installer 1.3.1 requires composer-plugin-api ^1.0 -> found composer-plugin-api[2.0.0] but it does not match the constraint.
Problem 2
- contao/manager-plugin is locked to version 2.7.1 and an update of this package was not requested.
- contao/manager-plugin 2.7.1 requires composer-plugin-api ^1.1 -> found composer-plugin-api[2.0.0] but it does not match the constraint.
Problem 3
- ocramius/package-versions is locked to version 1.4.1 and an update of this package was not requested.
- ocramius/package-versions 1.4.1 requires composer-plugin-api ^1.0.0 -> found composer-plugin-api[2.0.0] but it does not match the constraint.
Problem 4
- lib-xsl is present at version 1.1.26.0 and cannot be modified by Composer
- Only one of these can be installed: lib-libxslt[1.1.32], lib-xsl[1.1.26.0]. lib-libxslt replaces lib-xsl and thus cannot coexist with it.
- lib-libxslt is present at version 1.1.32 and cannot be modified by Composer

ocramius/package-versions only provides support for Composer 2 in 1.8+, which requires PHP 7.4.
If you can not upgrade PHP you can require composer/package-versions-deprecated to resolve this with PHP 7.0+.

You are using Composer 2, which some of your plugins seem to be incompatible with. Make sure you update your plugins or report a plugin-issue to ask them to support Composer 2.

# Process terminated with exit code 2
# Result: Misuse of shell builtins

Ich bekomme diesen Composer einfach nicht installiert. :(

Und du hast wirklich "Composer Update ausführen" benutzt, wie im Screenshot der Contao News gezeigt?