Github site of the product: https://github.com/opendistro-for-elasticsearch/security-kibana-plugin/issues/503
They also have posted the solution, and it is to install the patch they reported here: https://github.com/opendistro-for-elasticsearch/security-kibana-plugin/releases/tag/v1.10.1.2
So, the steps for applying this patch, are as follows:
Before applying this, please make backup of the directory: /usr/share/kibana/plugins/opendistro_security/
This directory sometimes contains configurations about Authentication and Authorization.