fix(tui): handle error when creating a session (#16767)

packages/opencode/src/cli/cmd/tui/component/prompt/index.tsx

@@ -539,12 +539,25 @@ export function Prompt(props: PromptProps) {
       promptModelWarning()
       return
     }
-    const sessionID = props.sessionID
-      ? props.sessionID
-      : await (async () => {
-          const sessionID = await sdk.client.session.create({}).then((x) => x.data!.id)
-          return sessionID
-        })()
+
+    let sessionID = props.sessionID
+    if (sessionID == null) {
+      const res = await sdk.client.session.create({})
+
+      if (res.error) {
+        console.log("Creating a session failed:", res.error)
+
+        toast.show({
+          message: "Creating a session failed. Open console for more details.",
+          variant: "error",
+        })
+
+        return
+      }
+
+      sessionID = res.data.id
+    }
+
     const messageID = Identifier.ascending("message")
     let inputText = store.prompt.input