Upgrading ERPNext v13 latest

Hello Community
Trying to update on a on prem instance Ubuntu 20.04.3 LTS
erpnext 13.16.1
frappe 13.16.0

Installing frappe
$ ./env/bin/python -m pip install -q -U -e ./apps/frappe
$ yarn install
00h00m00s 0/0: : ERROR: [Errno 2] No such file or directory: ‘install’

although the upgrade does complete, these errors are problematic …
any ideas on how to fix this ?

I have some problems to install with the last compilation. Unknow if any change installer but few week / version before no problem.

I have a small doubt in this area. How to check the version of erpnext first? For me it is showing just 13.x.x.

you can see here, i install many times but now have some problems with same script/instructions.


In about when I check it just says 13.x.x