Using Apache to deploy streamlit but WebSocket connection 'wss://' failed

Deployment
1

I want to deploy my streamlit app at https://myweb.com/myapp based on Apache. First, I run my app on Server1 (10.0.0.xxx), which is my intranet, and the Apache configuration is

<VirtualHost *:80>
    ServerName 10.0.0.xxx
    ProxyPreserveHost On

    ProxyPass /myapp http://localhost:8503
    ProxyPassReverse /myapp http://localhost:8503
    RedirectMatch 301 ^/myapp$ /myapp/

    # WebSocket support
    RewriteEngine On
    RewriteCond %{HTTP:Upgrade} =websocket [NC]
    RewriteCond %{HTTP:Connection} upgrade [NC]
    RewriteRule ^/myapp/(.*) ws://localhost:8503/$1 [P,L]
    RewriteCond %{HTTP:Upgrade} !=websocket [NC]
    RewriteRule ^/myapp/(.*) http://localhost:8503/$1  [P,L]
</VirtualHost>

It can be successfully accessed at http://10.0.0.xxx/myapp/. And on my Server2, I used the similar configuration of Apache (expect from http://10.0.0.xxx/myapp to https://myweb.com/myapp)

<VirtualHost *:443>
    ServerName myweb.com
    ProxyPreserveHost On

    ProxyPass /myapp http://10.0.0.xxx/myapp
    ProxyPassReverse /myapp http://10.0.0.xxx/myapp
    RedirectMatch 301 ^/myapp$ /myapp/

    # WebSocket support
    RewriteEngine On
    RewriteCond %{HTTP:Upgrade} =websocket [NC]
    RewriteCond %{HTTP:Connection} upgrade [NC]
    RewriteRule ^/myapp/(.*) ws://10.0.0.xxx/myapp/$1 [P,L]
    RewriteCond %{HTTP:Upgrade} !=websocket [NC]
    RewriteRule ^/myapp/(.*) http://10.0.0.xxx/myapp/$1  [P,L]
</VirtualHost>

But it can not connect the WebSocket with the errorWebSocket connection to 'wss://myweb.com/myapp/_stcore/stream' failed:
I want to know where am I wrong, thanks!