Bootstrap failing with Drush 9.1.0

Question

I had Drush 9 working before it got upgraded to 9.1.0 and am a little bit at my wits end why Bootstrap is failing and why I get "Bootstrap failed" or "! [NOTE] Drupal root not found. Pass --root or a @siteAlias in order to see Drupal-specific commands."

• My build directory is separate from my vendor directory. (shorthanded below to [build] and [composer])
• There are a couple of debugged commands below, one trying to use an alias, and one just using the help command.
• There are a couple extra alias paths (the last two) which are not valid and I can't figure out where they come from (they are not in my drush.yml anywhere), but my alias file is found... @default.dev does seem to work.
• adding -r or -uri (or using that in place of the alias) does not make any difference... I still get the Bootstrap failed.

What has changed from earlier versions of Drush 9, or what am I doing incorrectly here? There was similar things with Drush 8 at some point, but none of the solutions that I saw in there worked, and I didn't see anything specific to Drush 9.

[794e@794elmp01 htdocs]$ drush @default.dev cr -d
 [preflight] Config paths: /../.drush/drush.yml,/var/..[composer]/vendor/drush/drush/drush.yml
 [preflight] Alias paths: /../.drush/sites,/var/..[build]/sites,/var/..[build]/drush/sites,/var/..[composer]/drush/sites
 [preflight] Commandfile search paths: /var/../vendor/drush/drush/src
 [bootstrap] Bootstrap to site [0.2 sec, 10.19 MB]
  [Exception]
  Bootstrap failed.
Exception trace:
 () at /var/..[composer]/vendor/drush/drush/src/Boot/BootstrapHook.php:31
 Drush\Boot\BootstrapHook->initialize() at /var/..[composer]/vendor/consolidation/annotated-command/src/Hooks/Dispatchers/InitializeHookDispatcher.php:34
 Consolidation\AnnotatedCommand\Hooks\Dispatchers\InitializeHookDispatcher->callInitializeHook() at /var/..[composer]/vendor/consolidation/annotated-command/src/Hooks/Dispatchers/InitializeHookDispatcher.php:27
 Consolidation\AnnotatedCommand\Hooks\Dispatchers\InitializeHookDispatcher->initialize() at /var/..[composer]/vendor/consolidation/annotated-command/src/CommandProcessor.php:117
 Consolidation\AnnotatedCommand\CommandProcessor->initializeHook() at /var/..[composer]/vendor/consolidation/annotated-command/src/AnnotatedCommand.php:391
 Consolidation\AnnotatedCommand\AnnotatedCommand->initialize() at /var/..[composer]/vendor/symfony/console/Command/Command.php:229
 Symfony\Component\Console\Command\Command->run() at /var/..[composer]/vendor/symfony/console/Application.php:859
 Symfony\Component\Console\Application->doRunCommand() at /var/..[composer]/vendor/symfony/console/Application.php:206
 Symfony\Component\Console\Application->doRun() at /var/..[composer]/vendor/symfony/console/Application.php:125
 Symfony\Component\Console\Application->run() at /var/..[composer]/vendor/drush/drush/src/Runtime/Runtime.php:112
 Drush\Runtime\Runtime->doRun() at /var/..[composer]/vendor/drush/drush/src/Runtime/Runtime.php:41
 Drush\Runtime\Runtime->run() at /var/..[composer]/vendor/drush/drush/drush.php:64
 require() at /var/..[composer]/vendor/drush/drush/drush:4

drush list -d
 [preflight] Config paths: /home/../.drush/drush.yml,/var/..[composer]/vendor/drush/drush/drush.yml
 [preflight] Alias paths: /home/../.drush/sites,/var/..[build]/sites,/var/..[build]/drush/sites,/var/..[composer]/drush/sites
 [preflight] Commandfile search paths: /var/..[composer]/vendor/drush/drush/src
 [bootstrap] Bootstrap to max [0.22 sec, 10.14 MB]
 [debug] Trying to bootstrap as far as we can [0.22 sec, 10.15 MB]
Drush Commandline Tool 9.1.0
! [NOTE] Drupal root not found. Pass --root or a @siteAlias in order to see Drupal-specific commands.

Also, additional info: this is the site reference in the default.site.yml:

dev:
  root: /var/..[build]/htdocs
  uri: http://dev.our.internal.url.com

I verified that the root and URI were correct, and that the URI was accessible from the server (it is not a public URI).

EDIT: Adding Drush Status (per request)

 drush status -d
 [preflight] Config paths: /home/../.drush/drush.yml,/var/[composer]/vendor/drush/drush/drush.yml
 [preflight] Alias paths: /home/../.drush/sites,/var/[build]/sites,/var/[build]/sites,/var/[composer]/drush/sites
 [preflight] Commandfile search paths: /var/[composer[/vendor/drush/drush/src
 [bootstrap] Bootstrap to max [0.19 sec, 10.14 MB]
 [debug] Trying to bootstrap as far as we can [0.19 sec, 10.15 MB]
 PHP binary    : /usr/bin/php
 PHP config    : /etc/php.ini
 PHP OS        : Linux
 Drush script  : /var/[composer]/vendor/bin/drush
 Drush version : 9.1.0
 Drush temp    : /tmp
 Drush configs : /home/../.drush/drush.yml
                 /var/[composer]/vendor/drush/drush/drush.yml

Answer 1

I stumbled (and fell) upon the same issue today.

Following your work (missing composer.json at drupal's docroot), I was able to get over this problem, by making sure scaffolding was in place (inside drupal-project's composer.json). i.e.:

    "post-install-cmd": [
        "@drupal-scaffold",
        "DrupalProject\\composer\\ScriptHandler::createRequiredFiles"
    ],
    "post-update-cmd": [
        "@drupal-scaffold",
        "DrupalProject\\composer\\ScriptHandler::createRequiredFiles"
    ]

This may be quite obvious but got drush 9.2.1 working fine for me.

Good luck

Answer 2

I has this issue and found this to work:

rm -Rf vendor/drush
composer install

Credit: https://github.com/drush-ops/drush/issues/2959#issuecomment-332054773

This deletes drush and uses the composer.lock file to re-instate drush from the version specified there.

Version of drush is 9.5.2 on my setup (after running above command at time of writing).

Answer 3

I had this issue when upgrading from drush 8 to drush 9.

Drush was failing to find the settings files on the server I deployed to.

When creating the artifact for deployment, I had previously stripped out unnecessary files, including __PROJECT_ROOT__/composer.json.

It turns out, when I made sure __PROJECT_ROOT__/composer.json was included on the server, drush 9 found the settings files, and the database connection.