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 ('7236655e7cf2419edc4eb2f4a22ce0d6', -1, 1714334858, 1714334858, '0311064b', 5, 0)

Line : 158
File : sessions.php