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 ('34e7d8b9145b2c8b82f0dff2a42c79d4', -1, 1711620413, 1711620413, '0353575e', -10, 0, 0)

Line : 187
File : sessions.php