phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '78b8e781dfe792d8969be8b029803eea' 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, priv_session_id) VALUES ('78b8e781dfe792d8969be8b029803eea', -1, 1714264998, 1714264998, 'ac46b2be', 21, 0, 0, '2e3fb171cd3ed160f230c942e3417918')

Line : 187
File : sessions.php