html.m:053: In clause for `init_body_elem =
html.m:053:   out(html.non_empty_list((html.top_body_elem)))':
html.m:053:   mode error: the function result had the wrong instantiatedness.
html.m:053:   Final instantiatedness of `HeadVar__1' was `unique',
html.m:053:   expected final instantiatedness was
html.m:053:     named inst non_empty_list(top_body_elem)
html.m:053:     which expands to
html.m:053:       bound(
html.m:053:         '[|]'(
html.m:053:           named inst top_body_elem
html.m:053:           which expands to
html.m:053:             bound(
html.m:053:               text(ground)
html.m:053:             ;
html.m:053:               ul(
html.m:053:                 named inst non_empty_list(
html.m:053:                   li(
html.m:053:                     named inst top_body_elem
html.m:053:                   )
html.m:053:                 )
html.m:053:                 which expands to
html.m:053:                   bound(
html.m:053:                     '[|]'(
html.m:053:                       named inst li(
html.m:053:                         named inst top_body_elem
html.m:053:                       )
html.m:053:                       which expands to
html.m:053:                         bound(
html.m:053:                           li(
html.m:053:                             named inst
html.m:053:                             non_empty_list(top_body_elem)
html.m:053:                           )
html.m:053:                         ),
html.m:053:                       named inst list.list_skel(
html.m:053:                         named inst li(
html.m:053:                           named inst top_body_elem
html.m:053:                         )
html.m:053:                       )
html.m:053:                       which expands to
html.m:053:                         bound(
html.m:053:                           []
html.m:053:                         ;
html.m:053:                           '[|]'(
html.m:053:                             named inst li(
html.m:053:                               named inst top_body_elem
html.m:053:                             ),
html.m:053:                             named inst list.list_skel(
html.m:053:                               named inst li(
html.m:053:                                 named inst top_body_elem
html.m:053:                               )
html.m:053:                             )
html.m:053:                           )
html.m:053:                         )
html.m:053:                     )
html.m:053:                   )
html.m:053:               )
html.m:053:             ),
html.m:053:           named inst list.list_skel(
html.m:053:             named inst top_body_elem
html.m:053:           )
html.m:053:           which expands to
html.m:053:             bound(
html.m:053:               []
html.m:053:             ;
html.m:053:               '[|]'(
html.m:053:                 named inst top_body_elem,
html.m:053:                 named inst list.list_skel(
html.m:053:                   named inst top_body_elem
html.m:053:                 )
html.m:053:               )
html.m:053:             )
html.m:053:         )
html.m:053:       ).