Hi RahmaTeffahi ,
I think this is a bug. We also experienced this issue. In fixing this issue, we configured user data in database.
Here are the steps we did.
1. Try first if you can log in using demo_admin or demo_user(or any user).
2. ( For example you we're able to log in using "demo_admin") Now go to knowage_demo database and look for "sbi_user" table.
3. Look for the "demo_admin" in USER_ID column.
4. Make it as super admin by changing it from "0" to "1" under IS_SUPERADMIN column.
5. Look for the "ORGANIZATION" Column and change it from "DEMO" to "DEFAULT_TENANT".
This should be your "demo_admin" user data now. (I just selected the changed columns)
6. After saving this setup, go to google chrome and clear cache. Log in to knowage using "demo_admin".
7 . Go to "users management" and change "biadmin" password and save. (Check also if it is still in "admin" role).
8. logout the "demo_admin" account then try to log in using "biadmin" with the latest password you provided.
Hope this can help.