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• 标题：简洁、精准描述您的问题，例如“最新预测库的API文档在哪儿 ”
• 版本、环境信息：

   1）PaddlePaddle版本：paddlepaddle==2.2.1
   2）CPU：AMD Ryzen 5 3600X 6-Core Processor
   3）系统环境：win10，python3.8

• 复现信息：

import paddlex as pdx

def infer(model_path,img_path):
model = pdx.load_model(model_path)
result = model.predict(img_path)
return result

model_path1 = "E:/zwj/D/test_kunchong_model/inference_model/inference_model"
img_path1 = "E:/zwj/UAV/JPEGImages/1.jpg"
result1 = infer(model_path1,img_path1)

model_path2 = "E:/zwj/D/armored1201_model/inference_model/inference_model"
img_path2 = "E:/zwj/UAV/JPEGImages/1.jpg"
result2 = infer(model_path2,img_path2)

model_path3 = "E:/zwj/D/UAV1201_model/inference_model/inference_model"
img_path3 = "E:/zwj/UAV/JPEGImages/1.jpg"
result3 = infer(model_path3,img_path3)

model_path4 = "E:/zwj/D/test_kunchong_model/inference_model/inference_model"
img_path4 = "E:/zwj/UAV/JPEGImages/1.jpg"
result4 = infer(model_path1,img_path1)

• 问题描述：

单个模型推理时正常运行，但是加载多个不同模型推理会报错

2022-01-15 01:27:39 [INFO] Model[PicoDet] loaded.
2022-01-15 01:27:42 [INFO] Model[PPYOLOv2] loaded.
2022-01-15 01:27:49 [INFO] Model[PPYOLO] loaded.
2022-01-15 01:27:53 [INFO] Model[PicoDet] loaded.
Traceback (most recent call last):
File "E:/zwj/D/py/showresult/infer.py", line 47, in
result1 = infer(model_path1,img_path1)
File "E:/zwj/D/py/showresult/infer.py", line 20, in infer
result = model.predict(img_path)
File "E:\zwj\D\py\venv\lib\site-packages\paddlex\cv\models\detector.py", line 540, in predict
outputs = self.run(self.net, batch_samples, 'test')
File "E:\zwj\D\py\venv\lib\site-packages\paddlex\cv\models\detector.py", line 105, in run
net_out = net(inputs)
File "E:\zwj\D\py\venv\lib\site-packages\paddle\fluid\dygraph\layers.py", line 914, incall
outputs = self.forward(inputs,kwargs)
File "E:\zwj\D\py\venv\lib\site-packages\paddlex\ppdet\modeling\architectures\meta_arch.py", line 71, in forward
outs.append(self.get_pred())
File "E:\zwj\D\py\venv\lib\site-packages\paddlex\ppdet\modeling\architectures\picodet.py", line 89, in get_pred
bbox_pred, bbox_num = self._forward()
File "E:\zwj\D\py\venv\lib\site-packages\paddlex\ppdet\modeling\architectures\picodet.py", line 64, in _forward
fpn_feats = self.neck(body_feats)
File "E:\zwj\D\py\venv\lib\site-packages\paddle\fluid\dygraph\layers.py", line 914, incall*
outputs = self.forward(*inputs,**kwargs)
File "E:\zwj\D\py\venv\lib\site-packages\paddlex\ppdet\modeling\necks\csp_pan.py", line 321, in forward
assert len(inputs) == len(self.in_channels)
AssertionError