UnknownError:Fail to find the dnn implementation解决方法

程序加上下面代码

gpus = tf.config.experimental.list_physical_devices('GPU')
if not gpus:
    return "No GPU available"
try:
    # Currently, memory growth needs to be the same across GPUs
    for gpu in gpus:
        tf.config.experimental.set_memory_growth(gpu, True)
    logical_gpus = tf.config.experimental.list_logical_devices('GPU')
    print(len(gpus), "Physical GPUs,", len(logical_gpus), "Logical GPUs")
except RuntimeError as e:
    print(e)