error when changing property of the user

[Mher Mher]

hi all, I'm trying to change the tinctures of the user but get error, tried different versions, all with the same error.

this is log:

14:03:53 [INF][ WBContext]: Parsing application arguments.
14:03:53 [INF][ WBContext]: /usr/bin/mysql-workbench-bin
14:03:54 [INF][ base library]: Notification GNUIFormCreated is not registered
14:03:54 [INF][ WBContext UI]: Initializing workbench context UI with these values:
base dir: /usr/share/mysql-workbench
plugin path: /usr/lib/mysql-workbench/plugins
struct path: /usr/share/mysql-workbench/grt
module path: /usr/lib/mysql-workbench/modules
library path: /usr/share/mysql-workbench/libraries
user data dir: /root/.mysql/workbench
open at start:
open type:
run at startup:
run type:
Force SW rendering: No
Force OpenGL: No
quit when done: No
14:03:54 [INF][ WBContext]: WbContext::init
14:03:59 [INF][ WBA]: Looking for extension modules for WBA...
14:03:59 [INF][ WBA]: 0 extension modules found
14:04:02 [WRN][ grt]: /usr/share/mysql-workbench/data/table_templates.xml:21: link 'com.mysql.rdbms.mysql.datatype.timestamp' <object db.SimpleDatatype> key=simpleType could not be resolved
14:04:02 [WRN][ grt]: /usr/share/mysql-workbench/data/table_templates.xml:106: link 'com.mysql.rdbms.mysql.datatype.varchar' <object db.SimpleDatatype> key=simpleType could not be resolved
14:04:02 [WRN][ grt]: /usr/share/mysql-workbench/data/table_templates.xml:229: link 'com.mysql.rdbms.mysql.datatype.int' <object db.SimpleDatatype> key=simpleType could not be resolved
14:04:02 [WRN][ grt]: /root/.mysql/workbench/server_instances.xml:16: link '4a3ec206-588c-11e6-81da-001c42f5d491' <object GrtObject> key=owner could not be resolved
14:04:03 [INF][ WBContext]: System info:
MySQL Workbench Community (GPL) for Linux/Unix version 6.2.5 revision 0 build 397 (64 bit)
Configuration Directory: /root/.mysql/workbench
Data Directory: /usr/share/mysql-workbench
Cairo Version: 1.14.0
OS: Linux 3.16.0-042stab113.21
CPU: 4x Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz (249.733MHz) - 1.00GiB RAM
Distribution: Debian GNU/Linux 8.5 (jessie)

Fips mode enabled: no

14:04:03 [INF][ base library]: Notification GNUIFormCreated is not registered
14:04:05 [INF][ base library]: Notification GNFocusChanged is not registered
14:04:05 [INF][ base library]: Notification GNUIFormCreated is not registered
14:04:06 [INF][ base library]: Notification GNFocusChanged is not registered
14:04:06 [ERR][ GRTDispatcher]: exception in grt execute_task, continuing: Exception: Access denied for user 'root'@'localhost' (using password: NO)
14:04:06 [ERR][ GRTDispatcher]: worker: task 'execute sql queries' has failed with error:.Access denied for user 'root'@'localhost' (using password: NO)
14:04:12 [INF][ base library]: Notification GNFocusChanged is not registered
14:04:27 [WRN][ mforms backend]: Could not store password vault:
14:04:28 [INF][ SqlEditor]: Opened connection 'Local instance 3306' to MySQL Community Server (GPL) version 5.7.14
14:04:29 [INF][ base library]: Notification GNUIFormCreated is not registered
14:04:29 [INF][ base library]: Notification GNUIFormCreated is not registered
14:04:29 [INF][ base library]: Notification GNUIFormDestroyed is not registered
14:04:29 [INF][ base library]: Notification GNFormTitleDidChange is not registered
14:04:29 [INF][ base library]: Notification GNFocusChanged is not registered
14:04:31 [INF][wb_admin_control.py:query_server_info:629]: WbAdminControl.connect_sql(): The server version stored in the server instance profile was "None". Changed to the version reported by the server: "5.7.14"
14:04:31 [INF][ base library]: Notification GNUIFormCreated is not registered
14:04:31 [INF][wb_admin_control.py:server_polling_thread:497]: Monitoring thread running...
14:04:34 [ERR][ pymforms]: Unhandled exception in Python code: DbMySQLQuery.resultFieldStringValueByName(): MySQL_ResultSet::isNull: invalid value of 'columnLabel'
<traceback object at 0x7face9fcc3b0>
14:04:37 [ERR][ pymforms]: Unhandled exception in Python code: DbMySQLQuery.resultFieldStringValueByName(): MySQL_ResultSet::isNull: invalid value of 'columnLabel'
<traceback object at 0x7face94e1e18>
14:04:42 [ERR][wb_admin_main.py:shutdown:210]: shutting down admn
14:04:42 [INF][ base library]: Notification GNFocusChanged is not registered
14:04:42 [INF][ base library]: Notification GNUIFormDestroyed is not registered
14:04:45 [INF][wb_admin_control.py:server_polling_thread:513]: Monitoring thread done.
14:04:53 [INF][ base library]: Notification GNFocusChanged is not registered
14:05:24 [INF][ base library]: Notification GNFocusChanged is not registered
14:05:26 [INF][ base library]: Notification GNUIFormCreated is not registered
14:05:26 [INF][wb_admin_control.py:server_polling_thread:497]: Monitoring thread running...
14:05:30 [ERR][ pymforms]: Unhandled exception in Python code: DbMySQLQuery.resultFieldStringValueByName(): MySQL_ResultSet::isNull: invalid value of 'columnLabel'
<traceback object at 0x7face9fd4f38>
14:05:33 [ERR][ python]: Error forwarding notification to PythonTraceback (most recent call last):
14:05:33 [ERR][ python]: File "/usr/share/mysql-workbench/libraries/workbench/notifications.py", line 31, in _the_observer
14:05:33 [ERR][ python]: for obs, nam, obj in self.observers:
14:05:33 [ERR][ python]: File "/usr/lib/mysql-workbench/modules/wb_admin_security.py", line 1016, in user_selected
14:05:33 [ERR][ python]: self.owner.secman.async_get_account(self.show_user, user, host)
14:05:33 [ERR][ python]: File "/usr/lib/mysql-workbench/modules/wb_admin_security_be.py", line 453, in async_get_account
14:05:33 [ERR][ python]: account.load(name, host)
14:05:33 [ERR][ python]: File "/usr/lib/mysql-workbench/modules/wb_admin_security_be.py", line 928, in load
14:05:33 [ERR][ python]: self.old_authentication = len(result.stringByName("password")) == 16
14:05:33 [ERR][ python]: File "/usr/share/mysql-workbench/libraries/workbench/db_utils.py", line 199, in stringByName
14:05:33 [ERR][ python]: return modules.DbMySQLQuery.resultFieldStringValueByName(self.result, name)
14:05:33 [ERR][ python]: SystemError: DbMySQLQuery.resultFieldStringValueByName(): MySQL_ResultSet::isNull: invalid value of 'columnLabel'