phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '8c4ff3d9bdb3dc64931193500878a1a2' 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 ('8c4ff3d9bdb3dc64931193500878a1a2', -1, 1714010564, 1714010564, '12dd5521', 0, 0, 0)

Line : 187
File : sessions.php