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 ('55a149728ad63b1a96c234e561361770', -1, 1714536958, 1714536958, '12778560', 20, 0)

Line : 158
File : sessions.php