Internal database error while uploading content

Hello,

The LFD.log is not really relevant for this.
In your output, I do not see anything relevant to the loginByLoginId request..

Again, in the shell, I suggest you run:
# source /etc/kaltura*bash.sh
# kaltlog

then try to make the login request and look at the output.
kaltlog is just an alias for tail -f /opt/kaltura/log/*.log /opt/kaltura/log/batch/*.log | grep -A 1 -B 1 --color "ERR:\|PHP\|trace\|CRIT\|[error]"

If there are errors in /opt/kaltura/log/kaltura_api_v3.log, which is where the login request will log to, you should be able to see them. You can also just look inside the file, looking for the email addr you're using to login or for calls to loginByLoginId, a sample call should look like this:

(
    [format] => 2
    [ignoreNull] => 1
    [clientTag] => Kaltura-admin
    [apiVersion] => 3.3.0
    [loginId] => $`THE_EMAIL_IN_QUESTION`
    [password] =>
    [partnerId] => $PARTNER_ID
    [privileges] => disableentitlement
    [otp] =>
    [kalsig] => 58b11f9d9995b1caf3be7e365dd31b84
    [service] => user
    [action] => loginByLoginId
)
]

In the same log, you should also be able to see the SQL query made, something along the lines of:

SELECT ... FROM `user_login_data` WHERE user_login_data.LOGIN_EMAIL=$THE_EMAIL_IN_QUESTION..

Follow the whole chain of events to understand why the login request is denied..