fluidRow(column(3, : argument is missing, with no default - r

Question

I try to run shiny app and get error:
fluidRow(column(3, : argument is missing, with no default
I have two tabPanel. I check code and there is no missing argument, no additional comma etc. when I run some portion of this code it works. I can't guess source of this error. How to deal with this problem?
Bellow you can see one part of UI-side code of this shiny app:
ui <- fluidPage(
theme = shinytheme("slate"),
tabsetPanel(
tabPanel(h4("TOP N' financial"),
fluidRow(
column(3,
selectInput("bank", "Choose Bank", choices = unique(BANKS$BANK)),
numericInput("Number", "Choose top N borrower", value = 10, min = 1),
tags$style(type='text/css', ".selectize-input { font-size: 10px; line-height: 1px;}
.selectize-dropdown { font-size: 10px; line-height: 10px; }"),
selectizeInput("excl","SELECT Columns", colname, multiple=T)
),
column(9,
div(dataTableOutput("topNtable"), style = "font-size: 75%; width: 75%")
)
),
br(),
fluidRow(style = "background-color:#4d3a7d;",
h4("Ratio Calculation and plotting"),
column(7,
style = "border: 4px ridge #01B392;",
fluidRow(
textInput("client_ID", "Insert Client ID", value = '204885044'),
uiOutput("ID_table")
),
fluidRow(style = "border: 4px ridge #FF8902;",
plotlyOutput('coef_plot'))
),
column(5,
style = "border: 4px double red;",
h4('simple calculator'),
fluidRow(
tags$style(type='text/css', ".selectize-input { font-size: 10px; line-height: 1px;}
.selectize-dropdown { font-size: 10px; line-height: 10px; }"),
column(6,
selectInput("num", "Numerator", num_cols, selected = 'TOTAL_ASSETS')),
column(6,
selectInput("denum", "denumerator", num_cols, selected = 'TOTAL_LIABILITIES'))
),
fluidRow(
column(6, align = "center",
div(tableOutput("coefficient"))#,style = "font-size: 75%; width: 75%")
)
)
)
),
This is server code (whole)
server <- function(input, output, session){
react_fin <- reactive(get_top_N_financial(input$bank,input$Number, input$excl)%>%
group_by(CLIENT_ID)%>%
filter(DATE == max(DATE))%>%
head(n=input$Number))
output$topNtable <- renderDataTable(react_fin())
#CALCULATOR
calc_d <- reactive(get_top_N_financial(input$bank,input$Number, c(num_cols,'DATE')))
coef_d <- reactive({
req(input$client_ID)
filter(calc_d(), CLIENT_ID == input$client_ID)
})
coef_df <- reactive({
req(input$num)
req(input$denum)
ratio <- round(coef_d()[[input$num]]/coef_d()[[input$denum]], 4)
data.frame(cbind(ratio, coef_d()$DATE))%>%
rename('Date'=V2)%>%
arrange(desc(Date))
})
output$coefficient <- renderTable(coef_df()%>%
slice_head(n = 6))
output$coef_plot <-renderPlotly(plot_ly(coef_df(), x = ~Date,
y = ~ratio, type = 'scatter', mode = 'lines',
height = 300, width = 500))
Client <- reactive((get_name(input$bank, input$client_ID)))
output$ID_table <- renderUI(Client()$CLIENT_NAME)
pd_dt <- reactive(get_debt(input$client_ID))
output$ecl_pl <- renderPlot(plot_pd_lgd(pd_dt()))
## create ind_table
observeEvent(pd_dt(), {
choices <- unique(pd_dt()$DATE)
updateSelectInput(inputId = "ind_date", choices = choices)
})
output$ind_table <-function()(ind_sum_tbl(pd_dt(), input$ind_date))
################# PAGE2 #################
d_PD_PTI <- reactive(get_PD_PTI(input$N, input$start, input$end, input$stage))
output$reg_pl <- renderPlot(PD_PTI_Bank(d_PD_PTI()))
d_PD_Box <- reactive(get_PD_Box(input$N,input$stage))
output$Box_pd <- renderPlot(PD_Box(d_PD_Box()))
output$PTI_PD <- renderPlot(PD_PTI_heat(d_PD_PTI()))
d_LGD_LTV <- reactive(get_LGD_LTV(input$N, input$start, input$end,input$stage))
output$LTV_LGD <- renderPlot(LGD_LTV_heat(d_LGD_LTV()))
output$PD_Client_scatter <- renderPlotly(PD_diff_banks_scatter(input$start, input$end, input$N))
df <- reactive(PD_CLIENT_DF(input$start, input$end,input$N))
output$PD_scat <- renderPlot(PD_CLIENT_plot(df()))
output$brush_tbl <-renderTable({
brushedPoints(df(), input$brush) %>%
select()
})
}
Thanks in advance

Answer 1

My guess: Issue of parentheses: Here is a working example with your UI code.
library(shiny)
library(shinythemes)
BANKS
ui <- fluidPage(
theme = shinytheme("slate"),
tabsetPanel(
tabPanel(h4("TOP N' financial"),
fluidRow(
column(3,
selectInput("bank", "Choose Bank", choices = unique(BANKS$BANK)),
numericInput("Number", "Choose top N borrower", value = 10, min = 1),
tags$style(type='text/css', ".selectize-input { font-size: 10px; line-height: 1px;}
.selectize-dropdown { font-size: 10px; line-height: 10px; }"),
selectizeInput("excl","SELECT Columns", colname, multiple=T)
),
column(9,
div(dataTableOutput("topNtable"), style = "font-size: 75%; width: 75%")
)
)
)
)
),
server <- function(input, output, session) {
}
shinyApp(ui, server)