phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'b2f4c5402aaf8cacd89418f801a8cde4' 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 ('b2f4c5402aaf8cacd89418f801a8cde4', -1, 1714044221, 1714044221, '1277fd5d', -7, 0, 0)

Line : 187
File : sessions.php