phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO docttorrdiscluc_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('c5677cb75816f05fc700d89e7b2bdcb9', -1, 1547892406, 1547892406, '22cbd574', -2, 0, 0)

Line : 190
File : sessions.php