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 ('1298c32abb0b0498fd7618442528476f', -1, 1714384917, 1714384917, '0380cb8f', 15, 0)

Line : 158
File : sessions.php