phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'aae69ab6f433c7e9bf0f6f91355adcf0' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('aae69ab6f433c7e9bf0f6f91355adcf0', -1, 1506177969, 1506177969, '36e0e633', -4, 0, 0)

Line : 187
File : sessions.php