phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '2c9f4d612f3d6ef6de81393dd04716ba' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('2c9f4d612f3d6ef6de81393dd04716ba', -1, 1765485168, 1765485168, 'd849d8b4', -4, 0, 0)

Line : 187
File : sessions.php