phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'ac9c45ef929df2466621bb2390bbaa2d' 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) VALUES ('ac9c45ef929df2466621bb2390bbaa2d', -1, 1715783014, 1715783014, '12becfb0', 0, 0, 0)

Line : 187
File : sessions.php