Nextcloud 21 beta 1 Error: Call to a member function getContainer() on null

Error: Call to a member function getContainer() on null

Error: Undefined index: workflowengine at /var/www/nextcloud/lib/private/AppFramework/Bootstrap/RegistrationContext.php#368

{
  "reqId": "tkApzuW9IxJofzWJ1Bl2",
  "level": 3,
  "time": "2020-12-15T15:59:22+00:00",
  "remoteAddr": "10.211.55.2",
  "user": "axheli",
  "app": "no app in context",
  "method": "POST",
  "url": "/index.php/settings/apps/enable",
  "message": {
    "Exception": "Error",
    "Message": "Call to a member function getContainer() on null",
    "Code": 0,
    "Trace": [
      {
        "file": "/var/www/nextcloud/lib/private/AppFramework/Bootstrap/Coordinator.php",
        "line": 143,
        "function": "delegateContainerRegistrations",
        "class": "OC\\AppFramework\\Bootstrap\\RegistrationContext",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/AppFramework/Bootstrap/Coordinator.php",
        "line": 86,
        "function": "registerApps",
        "class": "OC\\AppFramework\\Bootstrap\\Coordinator",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/Installer.php",
        "line": 144,
        "function": "runLazyRegistration",
        "class": "OC\\AppFramework\\Bootstrap\\Coordinator",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/apps/settings/lib/Controller/AppSettingsController.php",
        "line": 448,
        "function": "installApp",
        "class": "OC\\Installer",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php",
        "line": 218,
        "function": "enableApps",
        "class": "OCA\\Settings\\Controller\\AppSettingsController",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php",
        "line": 127,
        "function": "executeController",
        "class": "OC\\AppFramework\\Http\\Dispatcher",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/AppFramework/App.php",
        "line": 157,
        "function": "dispatch",
        "class": "OC\\AppFramework\\Http\\Dispatcher",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/Route/Router.php",
        "line": 301,
        "function": "main",
        "class": "OC\\AppFramework\\App",
        "type": "::"
      },
      {
        "file": "/var/www/nextcloud/lib/base.php",
        "line": 1008,
        "function": "match",
        "class": "OC\\Route\\Router",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/index.php",
        "line": 37,
        "function": "handleRequest",
        "class": "OC",
        "type": "::"
      }
    ],
    "File": "/var/www/nextcloud/lib/private/AppFramework/Bootstrap/RegistrationContext.php",
    "Line": 369,
    "CustomMessage": "Error during service alias registration of workflowengine: Call to a member function getContainer() on null"
  },
  "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 11_0_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36",
  "version": "21.0.0.8",
  "id": "5fd8eb1ac2eec"
}

{
  "reqId": "tkApzuW9IxJofzWJ1Bl2",
  "level": 3,
  "time": "2020-12-15T15:59:22+00:00",
  "remoteAddr": "10.211.55.2",
  "user": "axheli",
  "app": "PHP",
  "method": "POST",
  "url": "/index.php/settings/apps/enable",
  "message": {
    "Exception": "Error",
    "Message": "Undefined index: workflowengine at /var/www/nextcloud/lib/private/AppFramework/Bootstrap/RegistrationContext.php#368",
    "Code": 0,
    "Trace": [
      {
        "file": "/var/www/nextcloud/lib/private/AppFramework/Bootstrap/RegistrationContext.php",
        "line": 368,
        "function": "onError",
        "class": "OC\\Log\\ErrorHandler",
        "type": "::"
      },
      {
        "file": "/var/www/nextcloud/lib/private/AppFramework/Bootstrap/Coordinator.php",
        "line": 143,
        "function": "delegateContainerRegistrations",
        "class": "OC\\AppFramework\\Bootstrap\\RegistrationContext",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/AppFramework/Bootstrap/Coordinator.php",
        "line": 86,
        "function": "registerApps",
        "class": "OC\\AppFramework\\Bootstrap\\Coordinator",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/Installer.php",
        "line": 144,
        "function": "runLazyRegistration",
        "class": "OC\\AppFramework\\Bootstrap\\Coordinator",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/apps/settings/lib/Controller/AppSettingsController.php",
        "line": 448,
        "function": "installApp",
        "class": "OC\\Installer",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php",
        "line": 218,
        "function": "enableApps",
        "class": "OCA\\Settings\\Controller\\AppSettingsController",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php",
        "line": 127,
        "function": "executeController",
        "class": "OC\\AppFramework\\Http\\Dispatcher",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/AppFramework/App.php",
        "line": 157,
        "function": "dispatch",
        "class": "OC\\AppFramework\\Http\\Dispatcher",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/Route/Router.php",
        "line": 301,
        "function": "main",
        "class": "OC\\AppFramework\\App",
        "type": "::"
      },
      {
        "file": "/var/www/nextcloud/lib/base.php",
        "line": 1008,
        "function": "match",
        "class": "OC\\Route\\Router",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/index.php",
        "line": 37,
        "function": "handleRequest",
        "class": "OC",
        "type": "::"
      }
    ],
    "File": "/var/www/nextcloud/lib/private/Log/ErrorHandler.php",
    "Line": 91,
    "CustomMessage": "--"
  },
  "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 11_0_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36",
  "version": "21.0.0.8",
  "id": "5fd8eb1ac2f20"
}

@ChristophWurst

cc @ChristophWurst

Still present with NC21 beta-3.
Error occurs when enabling any app. In polls it seems, that the migration doesn't run properly then (preSchemaChange seems not to be executed). I can't confirm if this relates to this issue, but with NC20 migrations run as expected.

Still present with NC21 beta-6.

Also seeing this issue on 21.0.0 final

@ChristophWurst

cc @ChristophWurst

Is there a known fix?

is there any other error logged before the one about the undefined index or the getContainer? I don't see how the code can take that path without any preceding error

I get this one for every app before the getContainer error:

{
  "reqId": "QGjRhKM7q7d7EfmjYfQE",
  "level": 3,
  "time": "2021-02-20T23:44:17+01:00",
  "remoteAddr": "",
  "user": "--",
  "app": "PHP",
  "method": "",
  "url": "--",
  "message": {
    "Exception": "Error",
    "Message": "Undefined index: news at /var/www/nextcloud/lib/private/AppFramework/Bootstrap/RegistrationContext.php#421",
    "Code": 0,
    "Trace": [
      {
        "file": "/var/www/nextcloud/lib/private/AppFramework/Bootstrap/RegistrationContext.php",
        "line": 421,
        "function": "onError",
        "class": "OC\\Log\\ErrorHandler",
        "type": "::"
      },
      {
        "file": "/var/www/nextcloud/lib/private/AppFramework/Bootstrap/Coordinator.php",
        "line": 143,
        "function": "delegateContainerRegistrations",
        "class": "OC\\AppFramework\\Bootstrap\\RegistrationContext",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/AppFramework/Bootstrap/Coordinator.php",
        "line": 86,
        "function": "registerApps",
        "class": "OC\\AppFramework\\Bootstrap\\Coordinator",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/Installer.php",
        "line": 146,
        "function": "runLazyRegistration",
        "class": "OC\\AppFramework\\Bootstrap\\Coordinator",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/legacy/OC_App.php",
        "line": 431,
        "function": "installApp",
        "class": "OC\\Installer",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/core/Command/App/Install.php",
        "line": 84,
        "function": "enable",
        "class": "OC_App",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/3rdparty/symfony/console/Command/Command.php",
        "line": 255,
        "function": "execute",
        "class": "OC\\Core\\Command\\App\\Install",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/3rdparty/symfony/console/Application.php",
        "line": 1009,
        "function": "run",
        "class": "Symfony\\Component\\Console\\Command\\Command",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/3rdparty/symfony/console/Application.php",
        "line": 273,
        "function": "doRunCommand",
        "class": "Symfony\\Component\\Console\\Application",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/3rdparty/symfony/console/Application.php",
        "line": 149,
        "function": "doRun",
        "class": "Symfony\\Component\\Console\\Application",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/lib/private/Console/Application.php",
        "line": 215,
        "function": "run",
        "class": "Symfony\\Component\\Console\\Application",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/console.php",
        "line": 100,
        "function": "run",
        "class": "OC\\Console\\Application",
        "type": "->"
      },
      {
        "file": "/var/www/nextcloud/occ",
        "line": 11,
        "args": [
          "/var/www/nextcloud/console.php"
        ],
        "function": "require_once"
      }
    ],
    "File": "/var/www/nextcloud/lib/private/Log/ErrorHandler.php",
    "Line": 92,
    "CustomMessage": "--"
  },
  "userAgent": "--",
  "version": "21.0.0.18",
  "id": "603394c4e7be7"
}

I also have the same 2 (sets of) errors, except ...RegistrationContext.php#404

on NC21 final I see it, have you found any fix ?

@szaimen

Thanks a lot for the log @szaimen. I think I understand it now. There is only one occurrence in the code where we create and write the application instance to the $apps variable. And if there's an error there we silently continue.

Could someone apply this patch and try again?

diff --git a/lib/private/AppFramework/Bootstrap/Coordinator.php b/lib/private/AppFramework/Bootstrap/Coordinator.php
index 06a17e5242b..d82424f542b 100644
--- a/lib/private/AppFramework/Bootstrap/Coordinator.php
+++ b/lib/private/AppFramework/Bootstrap/Coordinator.php
@@ -118,7 +118,10 @@ class Coordinator {
                                        /** @var IBootstrap|App $application */
                                        $apps[$appId] = $application = $this->serverContainer->query($applicationClassName);
                                } catch (QueryException $e) {
-                                       // Weird, but ok
+                                       $this->logger->logException($e, [
+                                               'message' => "Application class $applicationClassName can't be loaded: " . $e->getMessage(),
+                                               'level' => ILogger::FATAL,
+                                       ]);
                                        continue;
                                }
                                try {

I've applied the fix, disabled the news app, enabled it again but the same error messages appear again.
Also unfortunately no new error message was logged, so I'm not sure if the patch works.
BTW: when I enable the news app, all those messages get logged: (which seem to be related to the enable command)

Hmm did you flush your opcache? Try restarting the web server.

Yes, I've cleared the cache (redis and apcu) and restarted the whole server. Still the same.

So it's always erroring at the exact same line. Try this

diff --git a/lib/private/AppFramework/Bootstrap/RegistrationContext.php b/lib/private/AppFramework/Bootstrap/RegistrationContext.php
index d2dc365d835..988313f20e8 100644
--- a/lib/private/AppFramework/Bootstrap/RegistrationContext.php
+++ b/lib/private/AppFramework/Bootstrap/RegistrationContext.php
@@ -38,6 +38,7 @@ use OCP\Dashboard\IManager;
 use OCP\EventDispatcher\IEventDispatcher;
 use OCP\ILogger;
 use Throwable;
+use function array_shift;
 
 class RegistrationContext {
 
@@ -399,7 +400,7 @@ class RegistrationContext {
                        }
                }
 
-               foreach ($this->aliases as $registration) {
+               while (($registration = array_shift($this->aliases)) !== null) {
                        try {
                                $apps[$registration['appId']]
                                        ->getContainer()
@@ -416,7 +417,7 @@ class RegistrationContext {
                        }
                }
 
-               foreach ($this->parameters as $registration) {
+               while (($registration = array_shift($this->parameters)) !== null) {
                        try {
                                $apps[$registration['appId']]
                                        ->getContainer()

Now that I think about it I'm very confident that this is actually the problem. Let me also open a PR …

See #25786

I've applied the patch and can confirm that it works. Thank you!

finally 🎊

For some reason it works when I put offending apps into the non-writable directory, but not it's in wapps

(and yes the wapps dir has properly set up permissions)

Sorry, but I’m new on github. I have the same problem. I’m trying to execute the patch but I can’t. Access denied. For sure I’m making something wrong. Must I specify any thing for git to recognize the patch? Thanks in advance

I've applied the patch and can confirm that it works. Thank you!

Same here. Thanks!

finally 🎊

Thanks! Worked for me too.

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Nextcloud 21 beta 1 Error: Call to a member function getContainer() on null #24711

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Nextcloud 21 beta 1 Error: Call to a member function getContainer() on null #24711

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kesselb commented on Dec 15, 2020

dartcafe commented on Dec 28, 2020

AndyXheli commented on Jan 16, 2021

szaimen commented on Feb 20, 2021

szaimen commented on Feb 20, 2021

TomasTokaMrazek commented on Feb 21, 2021

ChristophWurst commented on Feb 22, 2021

szaimen commented on Feb 22, 2021

klou commented on Feb 24, 2021

amatteo78 commented on Feb 24, 2021

ChristophWurst commented on Feb 24, 2021

szaimen commented on Feb 24, 2021

ChristophWurst commented on Feb 24, 2021

szaimen commented on Feb 24, 2021

ChristophWurst commented on Feb 24, 2021

ChristophWurst commented on Feb 24, 2021

ChristophWurst commented on Feb 24, 2021

szaimen commented on Feb 24, 2021

ChristophWurst commented on Feb 24, 2021

nikp123 commented on Mar 21, 2021

Rafael-Kiewning commented on Mar 23, 2021

hobbsecky commented on Mar 29, 2021

hobbsecky commented on Mar 29, 2021

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