phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('909fd64bc8d3d73a57eb43ef2d4b55cf', -1, 1714627626, 1714627626, '12d9cbac', -7, 0)

Line : 158
File : sessions.php