I was trying to have the page…’Home’ become the home page.
That is something to be done at Dashboard > Appearance > Customize > Static Front Page.
Your database is now expecting a wrong incoming URL while also looking for WordPress somewhere other than where it is actually located. To fix that, you can temporarily add the following with your own specifics near the top of your local wp-config.php:
define('WP_HOME','http://localhost/whatever');
define('WP_SITEURL','http://localhost/whatever');
https://codex.wordpress.org/Changing_The_Site_URL
If that does not work, you might also need this just once near the bottom of wp-config.php:
/** https://codex.wordpress.org/Changing_The_Site_URL#Relocate_method
/* @ just above "That's all, stop editing!" in wp-config.php
* WordPress supports an automatic relocation method intended as quick assist
* for getting a site working after relocating it from one server to another.
* After the "define" statements and just before "That's all, stop editing!",
* add this next line (and a slash at the end of this one to turn it on): /*toggle on/off*
define('RELOCATE',true);
/* Next Login as normal after being certain of the address being sent from your browser.
* Then look again in your browser's address bar to verify that you have logged in at the correct server.
* If this is the case, next go to Dashboard > Settings > General and verify the address settings and save them.
* Once the above has been completed, either remove the above 'define('RELOCATE',true);' line
* or comment it out with '//' or change the 'true' value to 'false'.
* Note: When the RELOCATE flag is set to 'true', the Site URL will be automatically
* updated to whatever path is being used to access the login screen. This will get the admin
* section up and running on the new URL, but it will not correct any other part of the setup.
* Those will still need to be altered manually.
I do not think you will also need this, but here it is anyway:
<?php
/* @ near top of theme functions.php
/*-either-*/
/* @ theme/functions.php /*toggle on/off*
update_option('siteurl','http://domain.com');
update_option('home','http://domain.com');
/*-or-*/
/* @ near top of theme/functions.php /*toggle on/off*
update_option('siteurl','http://www.domain.com');
update_option('home','http://www.domain.com');
/*-end-*/
