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 ('2da0b72a64c6b3b08a418ce90ca0fb47', -1, 1711723309, 1711723309, '2ccc7539', -11, 0, 0)

Line : 187
File : sessions.php