# Error when using opencv dnn module.

Source: https://forum.modalai.com/topic/1030/error-when-using-opencv-dnn-module
Category: General Questions (https://forum.modalai.com/category/2/general-questions)
Posted: 2022-06-17 11:15:45 UTC by Nguyen Tien Su
Replies: 2 · Views: 610

## Nguyen Tien Su · 2022-06-17 11:15:45 UTC

Hi all!
I can't use dnn module of opencv in voxl-tflite-server service.
![Screenshot-12.png](https://forum.modalai.com/assets/uploads/files/1655464480217-screenshot-12.png) 

Please help me solve this problem! Thank you very much!

## Reply by Chad Sweet (ModalAI staff) · 2022-06-17 14:17:29 UTC

We have a set of TensorFlow Lite example models that are included. 

Tensorflow lite is a different runtime than opencv. 

It looks like you are trying a new runtime with opencv. We don't support that ourselves though you are obviously free to try.

FWIW, those errors are c++ linking errors which means the version of opencv you are linking against doesn't include the symbols you are looking for

It will probably be a lot easier to stick with tensorflow lite

## Reply by Nguyen Tien Su · 2022-06-22 08:12:13 UTC

Thank @Chad-Sweet !