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 ('2fb4ad6f2b50a94d28c8fdb09d7c06cb', -1, 1711725325, 1711725325, '641a0182', -10, 0, 0)

Line : 187
File : sessions.php