Finally, a picture, I I assumed that the machine was full of water and could not be moved and it’s a large heavy machine as you know.
From the rear of the machine, take the back off, you can release the latch at the lower back.
You could also do this from the front by removing the front panel not the control panel.
This is why I often don’t try to help there’s just not enough information and you can’t go back-and-forth quickly to help someone solve a problem either with email or writing on a blog like this
But you should be able to get it, released easily from the back .
John