I can install plug-ins from the command line, but when I do so from within Craft, I get this:
Composer was unable to install the updates.
Error: Could not delete /var/www/craft-dev/vendor/yiisoft/yii2-shell/ShellController.php: unlink(/var/www/craft-dev/vendor/yiisoft/yii2-shell/ShellController.php): Permission denied
Composer output: Package "craftcms/vue-asset" listed for update is not installed. Ignoring. Loading composer repositories with package information Updating dependencies Package operations: 8 installs, 2 updates, 4 removals
- Removing yiisoft/yii2-shell (2.0.4)
Any suggestions? Permission error?