In your electrode calculation, look for:
superc: Internal auxiliary supercell:     3 x     5 x     3  =      45

This should have a 3 along the semi-infinite direction.
Your electrode in your attached output does seem too short.

Den tir. 10. dec. 2019 kl. 22.03 skrev El-abed Haidar <
ehai2...@uni.sydney.edu.au>:

> Good afternoon
> I really was hoping for someone to explain to me what the error means:
>
> *Left principal cell is extending out with 480 elements: *
> *    Atom 19 connects with atom 91*
>
>  I started off with only 3 sheets of gold but that did not work. I added
> one sheet for each electrode and still did not work.
> I added another 2 sheets to expand each electrodes further but still not
> working out.
> Please note that the unit cell lattice vectors will only change towards
> the c direction which i recalculated.
> Could the mistake because I have x and negative coordinates? Could it be
> the unit cell vectors are not true. I just was hoping for more explanation
> than :
> *Electrode connectivity is not perfect, refer to the manual for achieving
> a perfect electrode.*
> Any thoughts would be highly appreciated.
> Thank you!
> EL-abed
>
>
>  El-abed Haidar | Doctor of Philosophy (Science)
>  Condensed Matter Theory (CMT) Group
>  | School of Physics
>  THE UNIVERSITY OF SYDNEY  | NSW | 2006
>
>
> --
> SIESTA is supported by the Spanish Research Agency (AEI) and by the
> European H2020 MaX Centre of Excellence (http://www.max-centre.eu/)
>


-- 
Kind regards Nick
-- 
SIESTA is supported by the Spanish Research Agency (AEI) and by the European 
H2020 MaX Centre of Excellence (http://www.max-centre.eu/)

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