Error in Modx Log (issue #2)

[terrybarth]

I wasn't sure if I could post this to a closed issue or if you see an update to a closed issue, so here it is.

I think issue #2 is what I'm seeing on my site. This appears only on the Modx error log on the first and last resource in the folder where there is no prev or next resource to navigate to..

[2016-11-09 09:50:49] (ERROR @ /home/xxxxxxx/public_html/core/model/modx/modx.class.php : 991) `0` is not a valid integer and may not be passed to makeUrl()
[2016-11-09 09:50:50] (ERROR @ /home/xxxxxxx/public_html/core/model/modx/modx.class.php : 991) `0` is not a valid integer and may not be passed to makeUrl()

This is the call

[[!siblingNav? &prevTpl=`prevTpl` &nextTpl=`nextTpl` ]]
[[+sn.prev]][[+sn.next]]

The Tpls are

[[+_isactive:is=`1`:then=`
  <a id="next" href="[[~[[+id]]]]">&gt;</a>  
  `:else=`
  <span class="none">&gt;</span>
`]]	

[[+_isactive:is=`1`:then=`
  <a id="prev" href="[[~[[+id]]]]">&lt;</a> 
  `:else=`
  <span class="none">&lt;</span>
`]]

I'm using version 1.2.2.pl
Modx 2.5.1

Any ideas?