EntityMalformedException: Missing bundle property on entity of type node. in entity_extract_ids() (line 7562

EntityMalformedException :خاصية الحزمة مفقودة للكينونة من نوع node . في entity_extract_ids() (السطر 7932 من ./includes/common.inc).

غالباً ستكون بسبب نموذج يتم إرساله بشكل مكرر مثلاً

Or custom form with a lot of custom code. Or maybe because you are using node_form_submit().

تحديث الزميل بلال .. قد تكون أحد الاحتمالات هي بسبب استدعاء node_load لرقم نود محذوفة .. أو رقم آي دي غير صحيح .. Bilal update .. Maybe it is because of calling node_load() of a not exists nid. or wrong nid.

تأكد من أن جميع النودات المستدعاة هي صحيحة وقد تم جلبها بطريقة صحيحة.

The Drush launcher could not find a Drupal site to operate on. Please do one of the following:
  - Navigate to any where within your Drupal project and try again.
  - Add --root=/path/to/drupal so Drush knows where your site is located.

http://badzilla.co.uk/drupal-7-drush-loader-and-non-composer-project ستحتاج إلى تركيب الدرش بإستخدام Composer حتى لو لم يكن مشروعك يعتمد على أو لايستخدم Composer

Warning: assert(): Cannot load a NULL ID. failed in Drupal\Core\Entity\EntityStorageBase->load() (line 249 of core/lib/Drupal/Core/Entity/EntityStorageBase.php).
Warning: array_flip(): Can only flip STRING and INTEGER values! in Drupal\Core\Entity\EntityStorageBase->loadMultiple() (line 265 of core/lib/Drupal/Core/Entity/EntityStorageBase.php).

Solution: Probably you are loading a NULL as a NID or FID. $variable = NULL; File::load($variable); To know the exact error please enable (All messages, with backtrace information) from (/admin/config/development/logging) This will show you a backtrace.

When importing Drupal 7 DB in Maria DB sometimes you may get this error:
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'db_file.sql' at line 1

The solution is: Skip this number of queries (for SQL) starting from the first one: 1 (instead of 0)

This error sometime happen after you doing registry rebuild for the Drupal 7 site.
General error: 2006 MySQL server has gone away in _drupal_session_write() when max_allowed_packet is not set high enough

The solution: Make sure to set the proper value of max_allowed_packet and double check the wait_timeout value too, you may want to increase it temporary.

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