PHP Parse error: syntax error, unexpected token "else", expecting "function" in /var/www/html/docroot/core/modules/views/src/Plugin/views/PluginBase.php on line 420
Parse error: syntax error, unexpected token "else", expecting "function" in /var/www/html/docroot/core/modules/views/src/Plugin/views/PluginBase.php on line 420
[warning] Drush command terminated abnormally.
Install Drupal 10.3.10 and php 8.3 and run drush cr
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Views is Drupal core, so your issue needs to be made against Drupal core, not the separate Views module for Drupal 7.
Besides that, I suspect you have a patch / merge request applied which has broken something, as that error doesn't happen without changes being made to the core codebase.