phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '2c4b2115f417539f18e48aef5636d22f' for key 'PRIMARY'

INSERT INTO forum_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('2c4b2115f417539f18e48aef5636d22f', -1, 1770063564, 1770063564, 'd849d8a7', 1, 0, 0)

Line : 186
File : sessions.php