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 ('8ba9b6271fa852cb81c1ed69984c9525', -1, 1715945976, 1715945976, '03859d0c', 15, 0)

Line : 158
File : sessions.php