Can’t connect to the clients FTP?
Here are some tips
Check the transcript log of your FTP client.
In the example below the server was telling me that I needed to be using SSL/TLS, which did solve the problem.
Show PHP error or debug log in VS Code terminal window
Monitoring your PHP error log is a great way of tracking any errors or debug information when working on your site.
Showing the log file in the VS Code terminal window is a great way of keeping an eye on any log entries as they appear.
The tail command can be used to show the latest log entries.
In the example below I am showing the php_error.log file from MAMP, showing the last 100 entries, and any future entries (-f).
tail -f -n100 /Applications/MAMP/logs/php_error.log