Try PIL

app.py

@@ -22,7 +22,7 @@ def text2image_latent(text,steps,width,height,images,diversity):
         image_str = image_str.replace("data:image/png;base64,","")
         decoded_bytes = base64.decodebytes(bytes(image_str, "utf-8"))
         img = Image.open(io.BytesIO(decoded_bytes))
-        image_arrays.append(numpy.asarray(img))
+        image_arrays.append(img)
         #url = shortuuid.uuid()
         #temp_dir = './tmp'
         #if not os.path.exists(temp_dir):