Update app.py

app.py

@@ -30,7 +30,8 @@ def run_script(url: str, height: int, width: int):
             driver.implicitly_wait(30)
             driver.set_window_size(int(width), int(height))
             page = driver.find_element(By.TAG_NAME, "html")
-            driver.execute_script("arguments[0].theme = 'gab-black';",html)
+            print (page)
+            driver.execute_script("arguments[0].theme = 'gab-black';",page)
             #driver.execute_script("arguments[0].theme = 'gab-black';",page)
             
             obj = driver.find_element(By.CLASS_NAME, "main")