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 ('49b1c9569315721a7e4b15ce8e9ef1b2', -1, 1714359861, 1714359861, '03857bc1', 7, 0)

Line : 158
File : sessions.php