phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '15f264f0cdf2c584ac5a2ab6ac0c5e3b' 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 ('15f264f0cdf2c584ac5a2ab6ac0c5e3b', -1, 1738419696, 1738419696, '038ec66c', -4, 0, 0)

Line : 187
File : sessions.php