phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '9ac8c70ebb7aaa3e3734c8c90d2fdc8b' 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 ('9ac8c70ebb7aaa3e3734c8c90d2fdc8b', -1, 1715611732, 1715611732, 'c0a80201', -4, 0, 0)

Line : 187
File : sessions.php