phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '794c68234c41df1775b4c1cf441560de' 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 ('794c68234c41df1775b4c1cf441560de', -1, 1766314510, 1766314510, 'd849d819', -9, 0, 0)

Line : 187
File : sessions.php