ERRO: instalation frappe builder, templete does not appear

My frappe builder when I install it on my website together with erpnext does not work I have tried everything to solve it could someone help me? When I access p /builder the screen goes blank like the print below

commands using:

enable developer mode and configuration

Change directory to your frappe-bench/sites

cd ~
cd frappe-bench
cd sites

open common_site_config

nano common_site_config.json

add following configuration to this file then save and exit

{
 ...
 "developer_mode": 1,
 "server_script_enabled" : 1,
 ...
 }

change directory to your site

from ~/frappe-bench/sites$

cd localhost

edit site_config.json

nano site_config.json

add allow_cors, developer_mode, ignore_csrf for development application

 "ignore_csrf" : 1,
 "allow_cors" : "*",
 "developer_mode" : 1,
 "server_script_enabled" : 1

Example install builder app

Back to frappe-bench directory

cd ~/frappe-bench
bench get-app builder
bench --site localhost install-app builder

Instalation
self-hosted docker