if i pass the image to the my model i got this error

my model is

```
class mandal(nn.Module):
def __init__(self):
super(mandal,self).__init__()
#layer1 inpit (136,136 *3) output (136,136)
self.layer1=nn.Conv2d(3,16,3,stride=1,padding=1)
#layer2 input (136,136*16) output (136,136*32)
self.layer2=nn.Conv2d(16,32,3,stride=1,padding=1)
#layer3 input(136,136*32) output(640,480*64)
self.layer3=nn.Conv2d(32,64,3,stride=1,padding=1)
#layer4 input(136,136*64) output(66,66*64)
self.layer4=nn.MaxPool2d(2,2)
#layer5 input(66,66*64) output (33,33*128)
self.layer5=nn.Conv2d(64,128,3,stride=2,padding=2)
#layeer6 input(33,33*128) output(17,17*128)
self.layer6=nn.MaxPool2d(2,2)
#layer7 input(17,17*128) output(8,8*192)
self.layer7=nn.Conv2d(128,192,3,stride=2,padding=2)
#layer8 input(8,8*192) output(8,8*120)
self.layer8=nn.Conv2d(192,120,1,stride=1,padding=0)
#layer9 input(8,8*94) output(8,8*64)
self.layer9=nn.Conv2d(120,64,1,stride=1,padding=0)
#layer10 input(8,8*64) output(8,8*32)
self.layer10=nn.Conv2d(64,32,1,stride=1,padding=0)
#layer11 input(8,8*32) output(8,8*16)
self.layer11=nn.Conv2d(32,10,1,stride=1,padding=0)
self.falten=nn.Flatten()
#layer12 input(8,8*16) output(1024)
self.layer12=nn.Linear(32*9*9,500)
#layer13 input(1024) 0utput(500)
self.layer13=nn.Linear(500,80)
#layer14 input(80) output(10)
self.layer14=nn.Linear(80,10)
#layer15 input(10) output(3)
self.layer15=nn.Linear(10,2)
#layer12 input(8,8*16) output(1024)
self.layer16=nn.Linear(32*9*9,500)
#layer13 input(1024) 0utput(500)
self.layer17=nn.Linear(500,80)
#layer14 input(80) output(10)
self.layer18=nn.Linear(80,10)
#layer15 input(10) output(3)
self.layer19=nn.Linear(10,4)
#dropout p=0.20
self.dropout=nn.Dropout(0.20)
def forward(self,x):
x = x.view(x.size(0), -1)
# x = self.encoder(x)
# x = x.unsqueeze(1)
x = F.relu(self.layer1(x))
x = F.relu(self.layer2(x))
x = F.relu(self.layer3(x))
x = self.layer4(x)
x = F.relu(self.layer5(x))
x = F.relu(self.layer7(x))
x = F.relu(self.layer8(x))
x = F.relu(self.layer9(x))
x = F.relu(self.layer10(x))
x = self.dropout(x)
x = self.layer6(x)
x = self.falten(x)
y = x
x = F.relu(self.layer12(x))
x = self.dropout(x)
x = F.relu(self.layer13(x))
x = self.dropout(x)
x = F.relu(self.layer14(x))
x = self.dropout(x)
x = F.relu(self.layer15(x))
y = F.relu(self.layer16(y))
y = self.dropout(x)
y = F.relu(self.layer17(y))
y = self.dropout(x)
y = F.relu(self.layer18(y))
y = self.dropout(x)
y = F.relu(self.layer19(y))
return x,y
```