In my form field type, i edit the file menu these error will appear,
Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[HY000]: General error: 2006 MySQL server has gone away' in D:\wamp\www\cms_development\includes\database\database.inc on line 2168 ( ! ) PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away in D:\wamp\www\cms_development\includes\database\database.inc on line 2168
Anybody Know how to rectify this error...
This may be because of max_allowed_packet
Change in the my.ini/my.cnf file. Include the single line under [mysqld] in your file
max_allowed_packet=500M
now restart the MySQL service once you are done. You can see it's curent value in mysql like this:
SHOW VARIABLES LIKE 'max_allowed_packet'
You can read about it here http://dev.mysql.com/doc/refman/5.1/en/packet-too-large.html
This is for Linux Users.In terminal,
Step 1:
locate my.cnf
And you copy the Path
Step 2:
sudo gedit "Paste the path"
Step 4: Changed "max_allowed_packet" from "1m" to "32m" and saved my.cnf
sudo "path" restart
(or) Do Normal System Restart
I had a similar problem. mysql would crash while drupal8 was going through install process. restarting mysql would eliminate the "mysql has gone away ..." error but drupal install would never finish. the following combination of mysql and apache configs provided a stable digitalocean droplet for me: https://www.digitalocean.com/community/questions/mysql-server-keeps-stopping-unexpectedly?answer=26016
