phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a7815ad5523c9e8b1848fb99f52ad65f' 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, is_robot) VALUES ('a7815ad5523c9e8b1848fb99f52ad65f', -1, 1743772224, 1743772224, '0390247a', 0, 0, 0, '0')

Line : 187
File : sessions.php