Update app.py

app.py

@@ -60,7 +60,7 @@ def run_script(url: str, height: int, width: int, check_b,check_h):
             dk=page.get_attribute('theme')
             print (dir(dk))
             print (page.get_attribute('theme'))
-            driver.execute_script("arguments[0].theme='gab-black';",page)
+            driver.execute_script("return arguments[0].theme='gab-black';",page)
             print (page.get_attribute('theme'))
             print(dir(driver))
             #driver.get(driver.getCurrentUrl())