phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '9f21b1aef10b3e0933c7973fdab809c3' 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 ('9f21b1aef10b3e0933c7973fdab809c3', -1, 1715869843, 1715869843, '03858b69', -8, 0, 0)

Line : 187
File : sessions.php