Grabbed dndbeyond's source code

```
~/go/bin/sourcemapper -output ddb -jsurl https://media.dndbeyond.com/character-app/static/js/main.90aa78c5.js
```

ddb_main/tools/js/CharacterSheet/components/InvalidCharacter/InvalidCharacter.tsx

@@ -0,0 +1,44 @@
+import { FC } from "react";
+
+import { BuilderLinkButton } from "../../../Shared/components/common/LinkButton";
+
+interface InvalidCharacterProps {
+  builderUrl: string;
+  isReadonly: boolean;
+}
+
+export const InvalidCharacter: FC<InvalidCharacterProps> = ({
+  builderUrl,
+  isReadonly,
+}) => {
+  return (
+    <div className="ct-invalid-character">
+      <h2>Character Not Ready!</h2>
+
+      <p>
+        The current character is not accessible because it is missing either a{" "}
+        <strong>Species</strong>, <strong>Class</strong> or{" "}
+        <strong>Ability Scores</strong>.
+      </p>
+
+      {!isReadonly && (
+        <>
+          <p>
+            Return to the character builder to complete the character creation
+            process.
+          </p>
+
+          <p>
+            <BuilderLinkButton
+              url={builderUrl}
+              className="ct-invalid-character__button"
+              size="oversized"
+            >
+              Character Builder
+            </BuilderLinkButton>
+          </p>
+        </>
+      )}
+    </div>
+  );
+};