@Matombo

Ok i got the website running again by running

composer require drush/drush:11.6.0 (other versions seemed to be broken)
drush eval "\$module_data = \Drupal::config('core.extension')->get('module'); unset(\$module_data['views']); \Drupal::configFactory()->getEditable('core.extension')->set('module', \$module_data)->save();" got it from here: https://www.drupal.org/node/157632 → manual module disable using drush
drush pm:install views (reinizializing views)

I hope nothing got lost, but want to rebuild the website from scratch anyway, this was just to extract some information without having the hassle to parse the database directly.

Hi,
trying to get an old website up to speed that is still drupal 9 and I wanted to first update to the latest 9.x release (9.5.11).

However I get the tag-plugin-not-found error:

Uncaught PHP Exception Drupal\Component\Plugin\Exception\PluginNotFoundException: "The "tag" plugin does not exist. Valid plugin IDs for Drupal\views\Plugin\ViewsPluginManager are: " at /var/www/virtual/viesca/test.viesca.de/core/lib/Drupal/Component/Plugin/Discovery/DiscoveryTrait.php line 53"

I already checked the Plugins/views/cache folder which seems to be fine:

$ ls -la core/modules/views/src/Plugin/views/cache/
total 32
drwxrwxr-x.  2 viesca viesca    80 Sep 19  2023 .
drwxrwxr-x. 21 viesca viesca  4096 Sep 19  2023 ..
-rw-rw-r--.  1 viesca viesca 11090 Jul 17 03:00 CachePluginBase.php
-rw-rw-r--.  1 viesca viesca   764 Jul 17 03:00 None.php
-rw-rw-r--.  1 viesca viesca   765 Jul 17 03:00 Tag.php
-rw-rw-r--.  1 viesca viesca  6461 Jul 17 03:00 Time.php

Any other thing i could check?