tethys/resources/lang/en/exceptions.php

<?php

return [

    /*
    |--------------------------------------------------------------------------
    | Exception Language Lines
    |--------------------------------------------------------------------------
    |
    | The following language lines are used in Exceptions thrown throughout the system.
    | Regardless where it is placed, a button can be listed here so it is easily
    | found in a intuitive way.
    |
    */
    'publish' => [
        'release' => [
            'update_error'   => 'There was a problem rleasing this dataset. Please try again.',
        ],
    ],

    'backend' => [
        
        'pages' => [
            'already_exists' => 'That Page already exists. Please choose a different name.',
            'create_error'   => 'There was a problem creating this Page. Please try again.',
            'delete_error'   => 'There was a problem deleting this Page. Please try again.',
            'not_found'      => 'That Page does not exist.',
            'update_error'   => 'There was a problem updating this Page. Please try again.',
        ],
        'licenses' => [
            'already_exists' => 'That License already exists. Please choose a different name.',
            'create_error'   => 'There was a problem creating this License. Please try again.',
            'delete_error'   => 'There was a problem deleting this License. Please try again.',
            'not_found'      => 'That License does not exist.',
            'update_error'   => 'There was a problem updating this License. Please try again.',
        ],
    ],
    'frontend' => [],
];