我的项目在Finetune过程报错如下：但是使用ERNIE模型没有报错，使用ERNIE2报错

/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddlehub/finetune/strategy.py in execute(self, loss, data_reader, config, dev_count)
481
482 # handle scheduler
--> 483 scheduled_lr = self.scheduler_handler(max_train_steps)
484
485 # handle clip
/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddlehub/finetune/strategy.py in scheduler_handler(self, max_train_steps)
316 dtype='float32',
317 persistable=True,
--> 318 name="learning_rate")
319
320 warmup_steps = int(max_train_steps * self.scheduler["warmup"])
/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle/fluid/layers/tensor.py in create_global_var(shape, value, dtype, persistable, force_cpu, name)
145 helper.set_variable_initializer(
146 var, initializer=Constant(
--> 147 value=float(value), force_cpu=force_cpu))
148
149 return var
TypeError: float() argument must be a string or a number, not 'Variable'