Error Adding new User java.sql.SQLException: Field 'is_empty' doesn't have a default value

Hi,
I’ve spent some time looking at this issue and have made some progress.

The issue appears after upgrading from version 5.6.7 to 6.7.6
The issue does NOT appear if i install a new installation of Version 6.7.6

After comparing all the plugins versions, database settings and tables between the fresh install ( which worked) and the upgraded instance ( which didn’t ), the only difference i could find was the following trigger

MySQL [SonarQube]>  show triggers;
+-----------+--------+-------+-------------------------------------------------------------------------------------------------------------- 
---------------------------+--------+------------------------+---------------------+------------------+---------------      -------+------- 
--------------+--------------------+
 | Trigger   | Event  | Table | Statement                                                                                                                                      
 | Timing | Created                | sql_mode            | Definer          | character_set_      client | 
 collation_connection | Database Collation |
+-----------+--------+-------+-------------------------------------------------------------------------------------------------------------   
--------------------------+--------+------------------------+---------------------+------------------+---------------      -------+--------
-------------+--------------------+
 | ins_notif | INSERT | users | INSERT INTO properties (prop_key, text_value, user_id) values 
 ("notification.ChangesOnMyIssue.EmailNotificationChannel","true", NEW.id) | AFTER  | 2019-01-04 
 20:09:14.27 | STRICT_TRANS_TABLES | userAppliSONAR@% | latin1                     | latin1_swedish_ci    | 
 utf8_general_ci    |
 +-----------+--------+-------+-------------------------------------------------------------------------------------------------------------
---------------------------+--------+------------------------+---------------------+------------------+---------------      -------+------ 
--------------+--------------------+
1 row in set (0.04 sec)

MySQL [SonarQube]> 

As a test, i dropped this trigger and then i was able to successfully able to add a new user.

My Questions: Is this ins_notif trigger created by SonarQube?
Is it ok to just drop this trigger, or should it be modified to make it work after the upgrade to 6.7