phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '8215d9cac8a84a7a7907d75c3251d18d' 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 ('8215d9cac8a84a7a7907d75c3251d18d', -1, 1715646720, 1715646720, '031270fa', 21, 0, 0)

Line : 187
File : sessions.php