Sortable package causes 'Shiny.setInputValue is not a function' errors

[dstone42]

When adding the Sortable package to my shiny app, I get four 'Shiny.setInputValue is not a function' errors whenever I start up my app. The app works as intended, but I'm annoyed by the console clutter and haven't been able to figure out why this error is occurring. Here is a screenshot of the errors:

I can include some relevant snippets of my code to see if it's an error that's my fault (which is very possible considering I don't see any other issues with this same error).

ui.R

library(shiny)
library(shinycssloaders)
library(shinyjs)
library(bslib)
library(sortable)

...

tabPanel("Sankey",
          fluidRow(
            column(
              2,
              div(
                class = "sidebar-card shadow-sm rounded p-3 bg-white",
                # Plot options
                tags$label("Select & Order Columns for Sankey Plot"),
                bucket_list(
                  header = NULL,
                  group_name = "sankey_columns",
                  orientation = "vertical",
                  add_rank_list(
                    text = "Available Columns",
                    input_id = "sankey_available",
                    labels = c("outc_cod", "irAECategory", "sex", "combination", "drug_class", "outc_cod"), # not selected by default
                    options = sortable_options(multiselect = FALSE, environment = "document")
                  ),
                  add_rank_list(
                    text = "Selected Columns (Drag to reorder)",
                    input_id = "sankey_selected",
                    labels = character(0), # default selection/order
                    options = sortable_options(multiselect = FALSE, environment = "document")
                  )
                ),

...