Error establishing a database connection

[derekPrivate]

Just trying this tool for the first time. I have successfully exported my multi-site Wordpress to a zip file. I have copied the zip file to a (completely) new Wordpress installation. I run the command

wp mu-migration import all site.zip --new_url=dev.xxxxxxxx.com/wordpress --path=/var/public/sites/wordpress

and get the message
Error establishing a database connection

Any ideas how I can investigate the issue? I have checked usernames etc using phpMyAdmin

[nicholasio]

Does the site work properly outside of MU-Migration? This seems to be an issue within your database connection since MU-Migration does not handle connections to the database directly.

[derekPrivate]

Yes - it is a brand-new site (clean install. wp setup) and I can connect to the server with my browser - the site just has the default content.

…

-- Derek

On 27 Nov 2019, at 11:42, Nícholas André ***@***.***> wrote: Does the site work properly outside of MU-Migration? This seems to be an issue within your database connection since MU-Migration does not handle connections to the database directly. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#69?email_source=notifications&email_token=ABU4OWHS5LVGO3XCOFKJK7LQVZMKHA5CNFSM4JSFCQVKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEFJHSAA#issuecomment-559053056>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABU4OWDZRLER4IEXWBOCXFDQVZMKHANCNFSM4JSFCQVA>.

[derekPrivate]

P.S. To confirm the connection, I just added this to a file and then opened with the browser and received “Connected successfully” <?php $link = mysqli_connect('localhost', 'root', 'root'); if (!$link) { die('Could not connect: ' . mysqli_error()); } echo 'Connected successfully'; mysqli_close($link); ?>

…

-- Derek

On 27 Nov 2019, at 11:42, Nícholas André ***@***.***> wrote: Does the site work properly outside of MU-Migration? This seems to be an issue within your database connection since MU-Migration does not handle connections to the database directly. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#69?email_source=notifications&email_token=ABU4OWHS5LVGO3XCOFKJK7LQVZMKHA5CNFSM4JSFCQVKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEFJHSAA#issuecomment-559053056>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABU4OWDZRLER4IEXWBOCXFDQVZMKHANCNFSM4JSFCQVA>.

[derekPrivate]

OK, I eventually found the issue. I was having the same problem with wp core update and tracked it down (eventually!) to using the native php instead of the one supplied with MAMP.

Thanks for your help.