php artisan key:generate

Set the application key

Usage

key:generate [--show] [--force]

Options

            --show             Display the key instead of modifying files 
            --force            Force the operation to run when in production 
-h,         --help             Display this help message 
-q,         --quiet            Do not output any message 
-v|vv|vvv,  --verbose          Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug 
-V,         --version          Display this application version 
            --ansi             Force ANSI output 
            --no-ansi          Disable ANSI output 
-n,         --no-interaction   Do not ask any interactive question 
            --env              The environment the command should run under