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 ('2959529d0f3ab9c2e90069c58d178c28', -1, 1713400732, 1713400732, '030f1242', -11, 0, 0)

Line : 187
File : sessions.php