phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '21c7c473815861aecd7d871cabe2ddc4' 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 ('21c7c473815861aecd7d871cabe2ddc4', -1, 1714159210, 1714159210, '12e2a95e', -4, 0, 0)

Line : 187
File : sessions.php