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 ('1b020f1a19b15dbbb5642b82e93bace3', -1, 1714312136, 1714312136, '127600f0', 7, 0)

Line : 158
File : sessions.php