phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO forum_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('e4e2aa39747c74495aebcf9768824816', -1, 1539951932, 1539951932, '36e11a2c', 6, 0, 0)

Line : 187
File : sessions.php