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 ('32d6f30e29d5604eda68e7ee35c26393', -1, 1747510692, 1747510692, '031665cf', -4, 0, 0)

Line : 189
File : sessions.php