Since this is empty
I tried to do command
show interfaces diagnostics optics ge-0/0/26
But it doesn't even get me any output !
I suspect an issue with the optic. Can you see if the optic shows up as inserted here:
show chassis pic fpc-slot 0 pic-slot 0
this should list all the inserted optics. If it does not show up try remove and reinsert.
Then try a different port, if it works there the port hardware is bad if it does not work anywhere the optic is either bad or not compatible.