error calling Concat: slice []interface {} not supported in concat

[coquinnsky]

When cloning this theme into our existing site, the js files in scripts.html can't be concatenated.
/hugo/themes/docsy/layouts/partials/scripts.html:68:107": execute of template failed: template: partials/scripts.html:68:107: executing "partials/scripts.html" at <resources.Concat>: error calling Concat: slice []interface {} not supported in concat

I've tried using module mounts as suggested in some other forums but can't seem to overcome this.

config

[module]

[[module.mounts]]
source = "static"
target = "static"

[[module.mounts]]
source = "themes/docsy/assets/js"
target = "assets/js"

line that causes issue

{{ $js := (slice $jsBs $jsBase $jsAnchor $jsSearch $jsMermaid $jsPlantuml $jsMarkmap $jsDrawio) | resources.Concat "js/main.js" -}}

[dcrec1]

Im having the same problem with current version of Hugo (v0.114.0+extended) and Docsy master.

[DNF-SaS]

Did you find a solution for your problem? I'm encountering the same issue.

[coquinnsky]

Unfortunately I moved on from that project. I've asked a previous colleague about it but he also doesn't remember, sorry.