Stuck on "Fetching User Information..."

[mmaxwell5]

I have enabled "2-Factor Authentication" and "OAuth 2.0" in my ownCloud environment and when a user tries to login on a client it gets stuck at "Fetching user information...". I used LDAP for user authentication. See image attached. Thank you.

Steps to reproduce

Expected behaviour

Tell us what should happen

Actual behaviour

Tell us what happens instead

Server configuration

• Operating system:
• Web server:
  • List of Apache/Nginx modules loaded:
• Database:
• PHP version:
• ownCloud version: (see ownCloud admin page)
• Updated from an older ownCloud or fresh install:
• Where did you install ownCloud from:
• Signing status (ownCloud 9.0 and above):

Login as admin user into your ownCloud and access 
http://example.com/index.php/settings/integrity/failed 
paste the results into https://gist.github.com/ and puth the link here.

• The content of config/config.php:

Log in to the web-UI with an administrator account and click on
'admin' -> 'Generate Config Report' -> 'Download ownCloud config report'
This report includes the config.php settings, the list of activated apps
and other details in a well sanitized form.

or 

If you have access to your command line run e.g.:
sudo -u www-data php occ config:list system
from within your ownCloud installation folder

*ATTENTION:* Do not post your config.php file in public as is. Please use one of the above
methods whenever possible. Both, the generated reports from the web-ui and from occ config:list
consistently remove sensitive data. You still may want to review the report before sending.
If done manually then it is critical for your own privacy to dilligently
remove *all* host names, passwords, usernames, salts and other credentials before posting.
You should assume that attackers find such information and will use them against your systems.

• List of activated apps:

If you have access to your command line run e.g.:
sudo -u www-data php occ app:list
from within your ownCloud installation folder.

• Are you using encryption: yes/no
• Are you using an external user-backend, if yes which one: LDAP/ActiveDirectory/Webdav/...

LDAP configuration (delete this part if not used)

With access to your command line run e.g.:
sudo -u www-data php occ ldap:show-config
from within your ownCloud installation folder

Without access to your command line download the data/owncloud.db to your local
computer or access your SQL server remotely and run the select query:
SELECT * FROM `oc_appconfig` WHERE `appid` = 'user_ldap';


Eventually replace sensitive data as the name/IP-address of your LDAP server or groups.

Client configuration

• Client used to connect & version: (iOS/Android/Desktop/moodle...)

• Default Browser:

• OS:

• Sync Client logs:

ref. https://doc.owncloud.org/desktop/latest/troubleshooting.html#log-files

Logs

Web server error log

Insert your webserver log here

ownCloud log (data/owncloud.log)

Insert your ownCloud log here

Browser log

Insert your browser log here, this could for example include:

    a) The javascript console log
    b) The network log 
    c) ...