Laravel from Scratch - Traversy YouTube - SQLSTATE[HY000] [1045] error when run PHP artisan migrate

I'm running PHP 7.4.9, Laravel 8 and MAMP 6.0.1 and am learning Laravel. Those of you running **MAMP** and following this excellent tutorial will find in Video 5 that you will get this error when attempt to run the PHP artisan migrate command in video #5: SQLSTATE[HY000] Access denied for user 'root'@'localhost' (using password: NO) (SQL: select * from information_schema.tables where table_schema = lsapp and table_name = migrations and table_type = 'BASE TABLE') It looks like a basic mySQL issue but it's not, it's due to some missing configuration in the defaul Laravel configuration for MAMP users. I spent ages attempting to resolve and found bits of helpful and conflicting info across different threads so thought it would be useful to combine the solution in one place...