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 ('c7bf50c77cfc0b70939ab48aa7b9f5ab', -1, 1713950308, 1713950308, '12bd027a', -11, 0, 0)

Line : 187
File : sessions.php