Unable to build project

[Ayon Gupta]

Undefined symbols for architecture arm64:
"cv::findContours(cv::_InputOutputArray const&, cv::_OutputArray const&, cv::OutputArray const&, int, int, cv::Point)", referenced from:
-[OpenCVImgProcess OpenCVImgSeg:] in ThermaFySDK2_2(OpenCVImgProcess.o)
boundQuadrangle(cv::Mat&, std::_1::vector<cv::Point, std::_1::allocator<cv::Point > >&) in ThermaFySDK2_2(OpenCVImgProcess.o)
"cv::findContours(cv::_InputOutputArray const&, cv::OutputArray const&, int, int, cv::Point)", referenced from:
-[OpenCVImgProcess OpenCVImgSeg:] in ThermaFySDK2_2(OpenCVImgProcess.o)
MaxArea(cv::Mat&, cv::Mat&) in ThermaFySDK2_2(OpenCVImgProcess.o)
LongEdges(cv::Mat&, int, cv::Mat&) in ThermaFySDK2_2(OpenCVImgProcess.o)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)