Check failed: datum_channels > 0 (0 vs. 0)

[Marwa Elfatih]

Hello
i am trying to train my VGG19 model, but this error keeps arising and i could not fix it. any help please?

F0414 09:26:56.525681  4495 data_transformer.cpp:465] Check failed: datum_channels > 0 (0 vs. 0)
*** Check failure stack trace: ***
    @     0x7fdfb4a2e5cd  google::LogMessage::Fail()
    @     0x7fdfb4a30433  google::LogMessage::SendToLog()
    @     0x7fdfb4a2e15b  google::LogMessage::Flush()
    @     0x7fdfb4a30e1e  google::LogMessageFatal::~LogMessageFatal()
    @     0x7fdfb50cd262  caffe::DataTransformer<>::InferBlobShape()
    @     0x7fdfb4fbb795  caffe::DataLayer<>::DataLayerSetUp()
    @     0x7fdfb504651e  caffe::BasePrefetchingDataLayer<>::LayerSetUp()
    @     0x7fdfb50fa4bc  caffe::Net<>::Init()
    @     0x7fdfb50fccde  caffe::Net<>::Net()
    @     0x7fdfb50c18c5  caffe::Solver<>::InitTrainNet()
    @     0x7fdfb50c2d25  caffe::Solver<>::Init()
    @     0x7fdfb50c304f  caffe::Solver<>::Solver()
    @     0x7fdfb511aae1  caffe::Creator_SGDSolver<>()
    @           0x40b7a1  train()
    @           0x408100  main
    @     0x7fdfb3981830  __libc_start_main
    @           0x408929  _start
    @              (nil)  (unknown)
Aborted (core dumped)