phpBB : Erro Crítico

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 2

INSERT INTO f_activesessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('78f50327a9e3dfeeb0a9a3d1360e0168', -1, 1752795874, 1752795874, 'd849d8e1', 7, 0, 0)

Line : 187
File : sessions.php