Hello! I did a project and the same issue happened, the emoji 
only appears on my localhost, when uploading to share.streamlit it breaks. Can you help me? GITHUB: GitHub - ArthurCassiano/paraquedismo_site: Website institucional informando sobre a segurança do paraquedismo, construído em python com streamlit, requests, pillow e css. and https://arthurcassiano-paraquedismo-site-app-fycggr.streamlit.app/
Can you try upgrading to a newer version of streamlit (by editing the number in requirements.txt) and seeing if it works then? I know we have fixed at least one issue related to emojis not working in the past few months.