phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '9b21535c4cf5bfc54d18f743852964fc' 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 ('9b21535c4cf5bfc54d18f743852964fc', -1, 1715046766, 1715046766, 'c0a80201', -11, 0, 0)

Line : 187
File : sessions.php