Hi Joseph,
You may have solved your problem already, but most likely your Moodle server can not connect with the BigBluebutton server
You may want to check this thread
https://moodle.org/mod/forum/discuss.php?d=243939
Running this command from your console
wget http://test-install.blindsidenetworks.com/bigbluebutton/api -O - --quiet; echo
you should receive an XML response from BBB, this would let us know as a first step if your server can talk to BBB
JF