FastAPI + JS fetch() — Everything Works but Nothing Shows

[EmmaFileGenius]

Hey folks — looking for help with a stubborn frontend+FastAPI issue. Hoping someone here has seen this.

🧠 Goal: Send a user prompt to a FastAPI /ask endpoint and display the reply on the page. Simple setup: HTML + JavaScript + FastAPI.

✅ Confirmed:

• JS fetch() sends payload, backend receives it
• FastAPI replies correctly: { "reply": "Your answer here" }
• No CORS issues
• console.log(data.reply) works
• 200 OK response confirmed in network tab

❌ Problem:
No matter what I try, this line silently fails:

document.getElementById("replyPanel").innerText = data.reply;

[Rapptz]

This is the repository for discord.py, a Discord bot library. This isn't the place for this question.