Invisible objects blocking the way

@shellyshai   Thanks for sharing the lot!  I just added the lot to a test save.  No judgements here.  What you've done so far looks very nice!  I do see the problem and I'll be back soon with some steps to resolve it. :-)

EDIT:  First, I noticed there was no fridge, so you'll need to add one in order to cook anything.  Maybe you moved it out while testing?

So the issue is there were some specter jars that were only visible from the second floor view through a window or the rear door.  Initially, I saw two jars.  After I got those two jars out, my test sim still got a routing failure from cooking.  So I checked the oven and found a third jar hidden underneath. So, you will need to move the oven out before doing the next steps to get rid of all the jars.

Go into build mode, move the oven somewhere and add a small arch next to the double doors.  The below image shows the first floor from the second floor view.  I used the Sims 3 camera to get a better angle of the room.  If you're not familiar with it, you can hold down the middle mouse button and drag the mouse to change the vertical angle using the TS3 camera.  The arch I used is the base game Narrow Post and Lintel Frame arch.  You can see that I moved the oven to the outside temporarily so that all three jars are visible through the arch.

Once the arch is in place, you can grab each jar and either sell them or put them in your sims' household inventory, if you want to keep them and place them somewhere else.  After that, just grab the arch and sell it.  Then move the oven back into place.

I added a fridge in the corner where the arch was to test and my sim was able to cook.

  Please come back and update if this works for you or not.