Cannot find Zcash params

Question

recently I rebooted my laptop and I get the below message when I try to run the node.

Any idea what I should do? I installed the latest PPA binaries.

Thanks,

ubuntu@ubuntu:~$ tezos-node Failed to initialize Zcash parameters: cannot find Zcash params in any of:

• /home/ubuntu/.local/share/zcash-params
• /usr/share/ubuntu/zcash-params
• /usr/local/share/zcash-params
• /usr/share/zcash-params
• /var/lib/snapd/desktop/zcash-params
• /home/ubuntu/.zcash-params You may download them using https://raw.githubusercontent.com/zcash/zcash/master/zcutil/fetch-params.sh

Answer 1

The release notes for 7.5+ contain instructions for getting rust built and the Zcash stuff. Make sure to check them out on the Gitlab.

Here’s the rust info http://tezos.gitlab.io/introduction/howtoget.html#setup-rust

Answer 2

OK - got it: wget https://raw.githubusercontent.com/zcash/zcash/master/zcutil/fetch-params.sh chmod +x fetch-params.sh ./fetch-params.sh

Any ideas what these params are for?

PS: happy this works because building from scratch didn't work anymore (rust missing)