Invalid credentials, please verify them and retry

I have been using Docker Graylog for 2 months. I started to receive the “Invalid credentials, please verify them and retry.” error since 2019-05-08 03:28 in web interface login. Also I can login with “admin” user, I see that have lost all defined configuration. (streams, content packages, alert integration, etc.) On the other hand, I checked the Mongo/graylog db, I saw that there are no user, stream, etc. definitions. How is it possible to lose this information?

Configuration:
-CentOS Linux release 7.6.1810
-graylog/graylog:2.5
-docker.elastic.co/elasticsearch/elasticsearch-oss:6.5.4
-mongo:3

–graylog logs
2019-05-08 03:28:29,245 INFO : org.graylog2.rest.resources.system.SessionsResource - Invalid username or password for user “xxx”

if your mongoDB is empty someone has wiped it …

or you had issues with the data path of mongo. you need to investigate what had happend.