Trouble with update on Ubuntu 18.04 LTS from netdata version: v1.14.0-rc0-20-nightly

Ubuntu 18.04 LTF. I followed this tutorial for upgrade my release
[Update the Netdata Agent | Learn Netdata](link url)
If I run

sudo bash <(curl -Ss https://my-netdata.io/kickstart.sh)

happen this

bash: /dev/fd/63: No such file or directory
ncadmin@ao:~$ curl: (23) Failed writing body (541 != 1369)

Can some one kindly help me to solve this ?
I also try

ncadmin@ao:~$ sudo bash <(curl -sSL https://raw.githubusercontent.com/netdata/netdata/master/packaging/installer/install-required-packages.sh)
bash: /dev/fd/63: No such file or directory
ncadmin@ao:~$ curl: (23) Failed writing body (1354 != 1371)

but without success :cry:
thanks a lot
Flavio