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 ('2178e75475903ba5088333f60f665dc9', -1, 1714775132, 1714775132, '340ff4cd', 7, 0)

Line : 158
File : sessions.php