Using Zoring OS 16 lite I have tried the code multiple times, restarted the pc, deleted and re cloned the repository. Thanks in advance. Hope this information helps you.
Here's the code:
mahir@Mahir-PC:~$ cd ~/katoolin3
mahir@Mahir-PC:~/katoolin3$ sudo ./install.sh
Executing: /tmp/apt-key-gpghome.v5hmGiQXTN/gpg.1.sh -qq --keyserver pool.sks-keyservers.net --recv-keys ED444FF07D8D0BF6
gpg: keyserver receive failed: Server indicated a failure
Executing: /tmp/apt-key-gpghome.lDPof8wLvi/gpg.1.sh -qq --keyserver hkp://pool.sks-keyservers.net:80 --recv-keys ED444FF07D8D0BF6
gpg: keyserver receive failed: Server indicated a failure
This may be a server issue. Please try again later