We Only support load_dygraph in imperative mode, please use fluid.dygraph.guard() as context to run it in imperative Mode该怎么办？
Created by: cheeryoung79
我在Ask ERNIE项目中执行ernie = ErnieModelForQuestionAnswering.from_pretrained('ernie-1.0')时，报 We Only support load_dygraph in imperative mode, please use fluid.dygraph.guard() as context to run it in imperative Mode，我该怎么办？