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 ('c81cf1de543ba8fe0d2e7dee6b86aca0', -1, 1713583687, 1713583687, '030fdafe', -11, 0, 0)

Line : 187
File : sessions.php