Error message on invalid tag somewhat obtuse and doesn't point out the issue being the undefined tag

[luiz00martins]

trafficstars

This error happens even if there's no actual file being processed (i.e. all files are no module() call found; no initial doc comment).

The error happens when executing ldoc <path_to_folder>. LDoc works fine however when executing ldoc <path_to_specific_lua_file>.

Full error message:

template failed for scripts.lib.utils.random: ...apps/luarocks/current/rocks/share/lua/5.4/ldoc\tools.lua:221: invalid value (table) at index 1 in table for 'concat'
stack traceback:
        [C]: in function 'table.concat'
        ...apps/luarocks/current/rocks/share/lua/5.4/ldoc\tools.lua:221: in function 'ldoc.tools.join'
        (...tail calls...)
        [string "TMP"]:311: in function <[string "TMP"]:1>
        [C]: in function 'xpcall'
        ...pps/luarocks/current/rocks/share/lua/5.4/pl\template.lua:140: in function <...pps/luarocks/current/rocks/share/lua/5.4/pl\template.lua:133>
        (...tail calls...)
        .../apps/luarocks/current/rocks/share/lua/5.4/ldoc\html.lua:283: in local 'templatize'
        .../apps/luarocks/current/rocks/share/lua/5.4/ldoc\html.lua:375: in function 'ldoc.html.generate_output'
        ...rrent\rocks\lib\luarocks\rocks-5.4\ldoc\1.4.6-2\bin\ldoc:830: in main chunk
        [C]: in ?

I'm using windows 10, with lua 5.4.2, ldoc 1.4.6

Edit: Was able to replicate the same issue in Pop OS.