self.L = input['L'].to(self.device).long() KeyError: 'L'

[Shimaa Holail]

File "test.py", line 104, in
val(opt)
File "test.py", line 37, in val
model.set_input(data) # unpack data from data loader
File "D:\change detection\change detect\STANet\models\CDF0_model.py", line 57, in set_input
self.L = input['L'].to(self.device).long()
KeyError: 'L'