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I used to execute  tinker  on previous Amazon AMI by using this command : sudo - E - u webapp php artisan tinker Now I am using  PHP 7.4 on Amazon Linux 2  and when I execute the above command, I get this error : Unable to create PsySH runtime directory . Make sure PHP is able to write to / run / user / 1000 in order to continue . So, In order to test, I gave the full permission to this folder and then executed my command again : sudo chmod 777 / run / user / 1000 sudo - E - u webapp php artisan tinker Actually, no error, but the environnement variables such as  RDS_PASSWORD  or  RDS_DB_NAME  are not loaded, making it impossible to perform database actions : Psy Shell v0 . 10.4 ( PHP 7.4 . 4 — cli ) by Justin Hileman >>> env ( 'RDS_DB_NAME' ) => null >>> User :: first () Illuminate / Database / QueryException with message 'SQLSTATE[HY000] [2002] Connection refused (SQL: select * from `users` limit 1)' I al