phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'fd684bd7397f29ec2bf4200a007cede9' 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 ('fd684bd7397f29ec2bf4200a007cede9', -1, 1769258420, 1769258420, 'd849d814', -4, 0, 0)

Line : 187
File : sessions.php