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, session_admin) VALUES ('37c2d3375aa4df3b47344637b066f623', -1, 1714305142, 1714305142, '0a020003', 1, 0, 0)

Line : 187
File : sessions.php