add htmltools:: to taglist in _html function in R template

Author: timelyportfolio

inst/templates/widget_r.txt

@@ -52,7 +52,7 @@ render${capName} <- function(expr, env = parent.frame(), quoted = FALSE) {
 #' Called by HTMLWidgets to produce the widget's root element.
 #' @rdname ${name}-shiny
 ${name}_html <- function(id, style, class, ...) {
-  tagList(
+  htmltools::tagList(
     # Necessary for RStudio viewer version < 1.2
     reactR::html_dependency_corejs(),
     reactR::html_dependency_react(),