We cannot enable the plugin (which was enabled), as we get this error,

Plugin could not be activated because it triggered a fatal error.

Fatal error: Namespace declaration statement has to be the very first statement or after any declare call in the script in /var/www/html/site/wp-content/plugins/wpforms-lite/src/Tasks/Tasks.php on line 3

I’ve disabled all plugins, reverted to Twenty Seventeen and reinstalled latest version of WP.

I’ve tried deleting the plugin, but that fails with 500 Internal Server Error,

https://d.pr/i/Z9Krto

Any ideas on how to progress?

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