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 ('851c11f029aa0f7f9e0530549c246503', -1, 1714617632, 1714617632, '12dac4b6', -52, 0, 0)

Line : 187
File : sessions.php