I am a drupal developer learner.When I open the order page from admin/commerce/orders then its display error look like: Missing bundle property on entity of type commerce_order. Fatal error: Allowed memory size of 1073741824 bytes exhausted (tried to allocate 154573161 bytes) in /var/www/vhosts/shop.kayaclinic.com/httpdocs/includes/database/database.inc on line 2168
So how can I solve this error?
To answer correctly need some clarification of details. version of modules used, context(for example how many orders do you have etc)
See MySQL Server has Gone Away in Drupal 7 it may solve Your case.
Regards