assests not loaded when deployed with subdomain on selfhosting server

[pinjiang]

1. Deploy the chatbot-ui with nginx reverse proxy on /gaianet
2. Add basePath /gaianet to next.config.js
3. Change assetPrefix : process.env.ASSET_PREFIX ? 'https://gaianet-ai.github.io/chatbot-ui' ; '/gaianet'

But a few svg is not loaded as follows