Drush cr is responding with Bootstrap Failed

I have a Drupal 8.9 site I built on my development server. I’ve now copied it over to my production server (Ubuntu 16) and set up the database. I need to run drush cr to finish the process but when I do I get Bootstrap failed.

I’ve been all over the web trying different things to get it to work. I’ve changed ‘localhost’ to ‘127.0.0.1’ in settings.php. I’ve removed drush and reinstalled. I’ve double checked that the database is accessible with the credentials in settings.php. I’ve run out of ideas.

Here’s the verbose output:

administrator@ubuntu:/var/www/html/ycfld$ drush cr -vvv
 [preflight] Config paths: /home/administrator/.composer/vendor/drush/drush/drush.yml
 [preflight] Alias paths: /var/www/html/ycfld/drush/sites,/var/www/html/drush/sites
 [preflight] Commandfile search paths: /home/administrator/.composer/vendor/drush/drush/src
 [debug] Starting bootstrap to site [0.05 sec, 7.81 MB]

In BootstrapHook.php line 32:

  [Exception]
  Bootstrap failed. Run your command with -vvv for more information.


Exception trace:
  at /home/administrator/.composer/vendor/drush/drush/src/Boot/BootstrapHook.php:32
 DrushBootBootstrapHook->initialize() at /home/administrator/.composer/vendor/consolidation/annotated-command/src/Hooks/Dispatchers/InitializeHookDispatcher.php:34
 ConsolidationAnnotatedCommandHooksDispatchersInitializeHookDispatcher->callInitializeHook() at /home/administrator/.composer/vendor/consolidation/annotated-command/src/Hooks/Dispatchers/InitializeHookDispatcher.php:27
 ConsolidationAnnotatedCommandHooksDispatchersInitializeHookDispatcher->initialize() at /home/administrator/.composer/vendor/consolidation/annotated-command/src/CommandProcessor.php:145
 ConsolidationAnnotatedCommandCommandProcessor->initializeHook() at /home/administrator/.composer/vendor/consolidation/annotated-command/src/AnnotatedCommand.php:289
 ConsolidationAnnotatedCommandAnnotatedCommand->initialize() at /home/administrator/.composer/vendor/symfony/console/Command/Command.php:221
 SymfonyComponentConsoleCommandCommand->run() at /home/administrator/.composer/vendor/symfony/console/Application.php:1018
 SymfonyComponentConsoleApplication->doRunCommand() at /home/administrator/.composer/vendor/symfony/console/Application.php:271
 SymfonyComponentConsoleApplication->doRun() at /home/administrator/.composer/vendor/symfony/console/Application.php:147
 SymfonyComponentConsoleApplication->run() at /home/administrator/.composer/vendor/drush/drush/src/Runtime/Runtime.php:118
 DrushRuntimeRuntime->doRun() at /home/administrator/.composer/vendor/drush/drush/src/Runtime/Runtime.php:49
 DrushRuntimeRuntime->run() at /home/administrator/.composer/vendor/drush/drush/drush.php:72

And here’s the status:

administrator@ubuntu:/var/www/html/ycfld$ drush status
 PHP binary    : /usr/bin/php7.4
 PHP config    : /etc/php/7.4/cli/php.ini
 PHP OS        : Linux
 Drush script  : /home/administrator/.composer/vendor/drush/drush/drush.p
                 hp
 Drush version : 10.3.1
 Drush temp    : /tmp
 Drush configs : /home/administrator/.composer/vendor/drush/drush/drush.y
                 ml
 Drupal root   : /var/www/html/ycfld

I’d appreciate any insights. This one thing is all that stands in my way of the site going live (I think).