phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'b7929d0d9f1daf53a79624ca09048c50' 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 ('b7929d0d9f1daf53a79624ca09048c50', -1, 1769207855, 1769207855, 'd849d89a', -4, 0, 0)

Line : 187
File : sessions.php