phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a06cac4bfb4926851c3cd0a807bdf534' 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 ('a06cac4bfb4926851c3cd0a807bdf534', -1, 1766661121, 1766661121, 'd849d8a2', 6, 0, 0)

Line : 187
File : sessions.php