phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '6812add8c95dfa6bb2a0457284319b2d' 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 ('6812add8c95dfa6bb2a0457284319b2d', -1, 1768188661, 1768188661, '0aff0001', 34, 0, 0)

Line : 199
File : sessions.php