phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '878b6b5ca00d2d22d5466e48b443b687' for key 1

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('878b6b5ca00d2d22d5466e48b443b687', -1, 1715647420, 1715647420, '12754a2c', 5, 0, 0)

Line : 187
File : sessions.php