Question2Answer fatal error:

Reading one assoc from empty results

Stack trace:

require() in index.php:27
require() in qa-index.php:188
qa_get_request_content() in qa-page.php:47
require() in page.php:191
qa_page_q_answer_view() in question.php:394
qa_post_html_fields() in question-view.php:499
qa_get_external_avatar_html() in format.php:607
qa_avatar_html_from_userid() in users.php:142
qa_get_user_email() in qa-external-users.php:609
qa_db_read_one_assoc() in qa-external-users.php:269