phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'b6153b6a72d542f7850eaea99c56e2dc' 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 ('b6153b6a72d542f7850eaea99c56e2dc', -1, 1765672333, 1765672333, 'd849d836', -4, 0, 0)

Line : 187
File : sessions.php