Debian - public key is not available

I was having a hard time installing the keys on Debian using this in the documentation:

ChirpStack Network Server Debian repository

ChirpStack provides pre-compiled binaries packaged as Debian (.deb) packages. In order to activate this repository, execute the following commands:

sudo apt-key adv --keyserver --recv-keys 1CE2AFD36DBCCA00

sudo echo "deb stable main" | sudo tee /etc/apt/sources.list.d/chirpstack.list
sudo apt-get update

I would get:
The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY 1CE2AFD36DBCCA00

I had to use this command to import:
apt-key adv --keyserver hkp:// --recv-keys 1CE2AFD36DBCCA00

Executing: /tmp/apt-key-gpghome.9C9kmyiOnX/ --keyserver hkp:// --recv-keys 1CE2AFD36DBCCA00
gpg: key 1CE2AFD36DBCCA00: public key “Orne Brocaar” imported
gpg: Total number processed: 1
gpg: imported: 1

I hope this helps others in the future…