I am MySQL user with workbench and Amazon RDS
Every time I try to access MySQL client connections I get this error:

Unhandled exception:
DbMySQLQuery.resultFieldStringValueByName():
MySQL_ResultSet::isNull: invalid values of 'columnLabel'
Check the log for more details

The user I am using has all the accesses of an admin/root
This error does not happen to all users, only to some
Am I forgetting to provide some kind of permission?
The proposed solution "[3 Feb 16:10] Adam Latchem" worked for me, in the context of MySQL Workbench connecting to a MariaDB database. The fix (for definiteness) is to edit the file C:\Program Files\MySQL\MySQL Workbench 8.0 CE\modules\wb_admin_connections.py at line 346, to change it from
("DB", mforms.StringColumnType, "DB", 100),
to
("db", mforms.StringColumnType, "DB", 100),
(note change of case in first argument).
OS Paths:
Linux (Ubuntu): /usr/lib/mysql-workbench/modules/wb_admin_connections.py
MacOS: /Applications/MySQLWorkbench.app/Contents/Resources/plugins/wb_admin_connections.py - by @QuickPrototype
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