Why is there an error/warning in the ENDSSH: command not found script?

Question

bash

There is a script like this

ssh $user@$host << ENDSSH
cd /var/node/$app
git pull origin master
npm install
npm run build
pm2 restart $app // 21 line
ENDSSH // 22 line

Everything works, but at the end of the execution I noticed such lines in the console

./deploy.sh: line 21: pp: command not found
./deploy.sh: line 22: ENDSSH: command not found

Why these 2 warnings and how to fix?

Answer 1

Apparently, the problem is in the content of the app variable. Enclose in quotes:

ssh [email protected]$host << ENDSSH
cd /var/node/"$app"
git pull origin master
npm install
npm run build
pm2 restart "$app"
ENDSSH

Answer 2

The space after << is superfluous.
Well, just in case, // not a comment in bash, # should be.