phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '9000504b2d52a5782a063c3b2d1fbce7' 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 ('9000504b2d52a5782a063c3b2d1fbce7', -1, 1773739360, 1773739360, 'd849d8bd', 0, 0, 0)

Line : 187
File : sessions.php