as of 2023-10-18 in the install document at Get Nextcloud → Download Server → Community Projects contains incorrect/missing information. Specifically, in order to verify validity of the tarball, the instruction for retrieving the public pgp key is incorrect.
This was previously reported (21 months ago) in another community support question Please update the installation docs: “gpg: keyserver receive failed: No name”
This is the incorrect information:
You can also grab the keys by issueing this command:
gpg --keyserver ha.pool.sks-keyservers.net --recv-keys 28806A878AE423A28372792ED75899B9A724937A
the instruction should say:
You can also grab the keys by issuing this command:
gpg --keyserver keys.openpgp.org --recv-keys 28806A878AE423A28372792ED75899B9A724937A