phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'dcf96a9ce79e61ab296546904eeb0ef8' 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 ('dcf96a9ce79e61ab296546904eeb0ef8', -1, 1767872070, 1767872070, 'd849d805', 6, 0, 0)

Line : 187
File : sessions.php