phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '31c8d5fdd728aa187adee96526fdae2d' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('31c8d5fdd728aa187adee96526fdae2d', -1, 1766166473, 1766166473, 'd849d819', -9, 0, 0)

Line : 187
File : sessions.php