"trainFast​erRCNNObje​ctDetector​" returns error "Cell contents reference from a non-cell array"

I'm trying to train the object detector "trainFasterRCNNObjectDetector" with my own data and it returns the error

"Cell contents reference from a non-cell array"

|However, if i try to run the same code with data given from the example from the documentation it returns no error.

Which I find strange, as you can see in the picture above, the data input is given in the exact same format.

I made trainingData and trainingData1 was given from the documentation

Thank you: Mathias J.R.S

Answer 1

[Bernhard Suhm]

Your own data must be read in a way that's not consistent with what trainFasterRCNNObjectDetector expects. Validate that the type of the read data is the same as in the doc example. If you want more help, attach a sample from your data and the exact code where the error occurs.