fix WebRequest

src/common/WebRequest.ts

@@ -16,6 +16,13 @@ export default class WebRequest {
           },
         });
 
+        // Resolve with a buffer if the content type is an image
+        if (response.headers.get("content-type")?.includes("image/")) {
+          const arrayBuffer = await response.arrayBuffer();
+          resolve(Buffer.from(arrayBuffer) as unknown as T);
+          return;
+        }
+
         const data = await response.json();
 
         // Reject if the status code is not 200