Hi everyone I'm try to update my Kali Net Hunter but I'm getting this error

root@kali:/etc/apt# apt-get update Get:1 http://http.kali.org kali-rolling InRelease [30.5 kB] Ign http://http.kali.org kali-rolling InRelease Ign http://http.kali.org kali-rolling/main armhf Packages/DiffIndex Ign http://http.kali.org kali-rolling/non-free armhf Packages/DiffIndex Ign http://http.kali.org kali-rolling/contrib armhf Packages/DiffIndex Hit http://http.kali.org kali-rolling/main armhf Packages Hit http://http.kali.org kali-rolling/non-free armhf Packages Hit http://http.kali.org kali-rolling/contrib armhf Packages Ign http://http.kali.org kali-rolling/contrib Translation-en_US Ign http://http.kali.org kali-rolling/contrib Translation-en Ign http://http.kali.org kali-rolling/main Translation-en_US Ign http://http.kali.org kali-rolling/main Translation-en Ign http://http.kali.org kali-rolling/non-free Translation-en_US Ign http://http.kali.org kali-rolling/non-free Translation-en Fetched 30.5 kB in 8s (3,437 B/s) Reading package lists... Done W: GPG error: http://http.kali.org kali-rolling InRelease: The following signatures were invalid: KEYEXPIRED 1517583136 KEYEXPIRED 1517583136 KEYEXPIRED 1517583136 KEYEXPIRED 1517583136 KEYEXPIRED 1517583136

So I try to update my keys with

root@kali:/etc/apt# wget -q -O - https://archive.kali.org/archive-key.asc | apt-key add

But I'm getting this error on termux
mktemp: failed to create directory via template ?/data/data/com.termux/files/usr/tmp/tmp.XXXXXXXXXX?: No such file or directory

I was wondering if somebody have this problem before and can help me