Problem to assign group a project

hello, I use kanboard 1.2.20 and when I want to add a group member of a project, it does not find any, whereas I have several groups and I have already added groups on previous versions to projects

Thanks for your help.

App version: 1.2.20
PHP version: 7.4.19
PHP SAPI: apache2handler
HTTP client: socket
Operating system version: Windows NT 6.3
Database type: mysql
Database version: 5.7.30-log
Web browser: Mozilla / 5.0 (Windows NT 10.0; Win64; x64) AppleWebKit / 537.36 (KHTML, like Gecko) Chrome / 91.0.4472.124 Safari / 537.36

hello, you can close this topic, I made the error in the configuration file with the LDAP settings, I corrected and I no longer have this problem thank you