No questions in Word Picnic

Question2Answer fatal error:

Reading column from invalid result

Stack trace:

require() in index.php:27
require() in qa-index.php:402
qa_output_content() in qa-page.php:53
html() in page.php:717
body() in qa-theme-base.php:543
body_content() in qa-theme-base.php:783
main() in qa-donut-layer.php:294
main_parts() in qa-donut-layer.php:443
main_part() in qa-theme-base.php:1663
q_list_and_form() in qa-theme-base.php:1733
q_list() in qa-theme-base.php:3253
checkRequestCase() in qa-donut-layer.php:1132
getAnswerAndViews() in qa-donut-layer.php:2082
customQueryExe() in qa-donut-layer.php:2162