These are chat archives for eventum/eventum
select count(*) from history where his_context is nullare the corrupted entries that you should restore.
his_context mediumtext NOT NULL, so you should run instead
select count(*) from history where his_context=''
fw_issue_historyas history doesn't seem to exist in this version. also fw_ is my db prefix.
select count(*) from fw_issue_history where his_context=''returns 0 as well.