我尝试通过plotly软件包生成sankey图，但是没有错误或警告，但图形为空白，您能否告诉我原因
我附加了我使用的数据，data_long和节点
我不确定是什么原因，请帮助我说明原因和解决方案以生成情节
data_long数据集

data_long <- structure(list(target = c("APPLICATION SITE DERMATITIS", "APPLICATION SITE DERMATITIS", 
"APPLICATION SITE DERMATITIS", "APPLICATION SITE ERYTHEMA", "APPLICATION SITE ERYTHEMA", 
"APPLICATION SITE ERYTHEMA", "APPLICATION SITE IRRITATION", "APPLICATION SITE IRRITATION", 
"APPLICATION SITE IRRITATION", "APPLICATION SITE PERSPIRATION", 
"APPLICATION SITE PRURITUS", "APPLICATION SITE PRURITUS", "APPLICATION SITE PRURITUS", 
"APPLICATION SITE VESICLES", "ASTHENIA", "CHEST PAIN", "FATIGUE", 
"FATIGUE", "OEDEMA PERIPHERAL", "MILD", "MILD", "MODERATE", "MILD", 
"MODERATE", "MILD", "MILD", "MODERATE", "MODERATE", "MODERATE", 
"MILD", "MILD", "MILD", "NONE", "POSSIBLE", "PROBABLE", "REMOTE", 
"PROBABLE", "REMOTE", "N", "N", "N", "N"), source = c("Placebo", 
"Xanomeline High Dose", "Xanomeline Low Dose", "Placebo", "Xanomeline High Dose", 
"Xanomeline Low Dose", "Placebo", "Xanomeline High Dose", "Xanomeline Low Dose", 
"Xanomeline High Dose", "Placebo", "Xanomeline High Dose", "Xanomeline Low Dose", 
"Xanomeline Low Dose", "Xanomeline High Dose", "Xanomeline High Dose", 
"Xanomeline High Dose", "Xanomeline Low Dose", "Xanomeline High Dose", 
"APPLICATION SITE DERMATITIS", "APPLICATION SITE ERYTHEMA", "APPLICATION SITE ERYTHEMA", 
"APPLICATION SITE IRRITATION", "APPLICATION SITE IRRITATION", 
"APPLICATION SITE PERSPIRATION", "APPLICATION SITE PRURITUS", 
"APPLICATION SITE PRURITUS", "APPLICATION SITE VESICLES", "ASTHENIA", 
"CHEST PAIN", "FATIGUE", "OEDEMA PERIPHERAL", "MILD", "MILD", 
"MILD", "MILD", "MODERATE", "MODERATE", "NONE", "POSSIBLE", "PROBABLE", 
"REMOTE"), value = c(4L, 2L, 4L, 2L, 5L, 5L, 1L, 3L, 3L, 1L, 
1L, 3L, 6L, 1L, 1L, 1L, 1L, 1L, 1L, 10L, 11L, 1L, 4L, 3L, 1L, 
9L, 1L, 1L, 1L, 1L, 2L, 1L, 1L, 10L, 26L, 2L, 6L, 1L, 1L, 10L, 
32L, 3L), IDsource = c(0, 1, 2, 0, 1, 2, 0, 1, 2, 1, 0, 1, 2, 
2, 1, 1, 1, 2, 1, 3, 4, 4, 5, 5, 6, 7, 7, 8, 9, 10, 11, 12, 13, 
13, 13, 13, 14, 14, 15, 16, 17, 18), IDtarget = c(3, 3, 3, 4, 
4, 4, 5, 5, 5, 6, 7, 7, 7, 8, 9, 10, 11, 11, 12, 13, 13, 14, 
13, 14, 13, 13, 14, 14, 14, 13, 13, 13, 15, 16, 17, 18, 17, 18, 
19, 19, 19, 19)), row.names = c(NA, -42L), class = c("grouped_df", 
"tbl_df", "tbl", "data.frame"), groups = structure(list(target = c("APPLICATION SITE DERMATITIS", 
"APPLICATION SITE DERMATITIS", "APPLICATION SITE DERMATITIS", 
"APPLICATION SITE ERYTHEMA", "APPLICATION SITE ERYTHEMA", "APPLICATION SITE ERYTHEMA", 
"APPLICATION SITE IRRITATION", "APPLICATION SITE IRRITATION", 
"APPLICATION SITE IRRITATION", "APPLICATION SITE PERSPIRATION", 
"APPLICATION SITE PRURITUS", "APPLICATION SITE PRURITUS", "APPLICATION SITE PRURITUS", 
"APPLICATION SITE VESICLES", "ASTHENIA", "CHEST PAIN", "FATIGUE", 
"FATIGUE", "MILD", "MILD", "MILD", "MILD", "MILD", "MILD", "MILD", 
"MILD", "MODERATE", "MODERATE", "MODERATE", "MODERATE", "MODERATE", 
"N", "N", "N", "N", "NONE", "OEDEMA PERIPHERAL", "POSSIBLE", 
"PROBABLE", "PROBABLE", "REMOTE", "REMOTE"), source = c("Placebo", 
"Xanomeline High Dose", "Xanomeline Low Dose", "Placebo", "Xanomeline High Dose", 
"Xanomeline Low Dose", "Placebo", "Xanomeline High Dose", "Xanomeline Low Dose", 
"Xanomeline High Dose", "Placebo", "Xanomeline High Dose", "Xanomeline Low Dose", 
"Xanomeline Low Dose", "Xanomeline High Dose", "Xanomeline High Dose", 
"Xanomeline High Dose", "Xanomeline Low Dose", "APPLICATION SITE DERMATITIS", 
"APPLICATION SITE ERYTHEMA", "APPLICATION SITE IRRITATION", "APPLICATION SITE PERSPIRATION", 
"APPLICATION SITE PRURITUS", "CHEST PAIN", "FATIGUE", "OEDEMA PERIPHERAL", 
"APPLICATION SITE ERYTHEMA", "APPLICATION SITE IRRITATION", "APPLICATION SITE PRURITUS", 
"APPLICATION SITE VESICLES", "ASTHENIA", "NONE", "POSSIBLE", 
"PROBABLE", "REMOTE", "MILD", "Xanomeline High Dose", "MILD", 
"MILD", "MODERATE", "MILD", "MODERATE"), .rows = structure(list(
    1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L, 10L, 11L, 12L, 13L, 14L, 
    15L, 16L, 17L, 18L, 20L, 21L, 23L, 25L, 26L, 30L, 31L, 32L, 
    22L, 24L, 27L, 28L, 29L, 39L, 40L, 41L, 42L, 33L, 19L, 34L, 
    35L, 37L, 36L, 38L), ptype = integer(0), class = c("vctrs_list_of", 
"vctrs_vctr", "list"))), class = c("tbl_df", "tbl", "data.frame"
), row.names = c(NA, -42L), .drop = TRUE))

节点数据集

nodes <- structure(list(name = c("Placebo", "Xanomeline High Dose", "Xanomeline Low Dose", 
"APPLICATION SITE DERMATITIS", "APPLICATION SITE ERYTHEMA", "APPLICATION SITE IRRITATION", 
"APPLICATION SITE PERSPIRATION", "APPLICATION SITE PRURITUS", 
"APPLICATION SITE VESICLES", "ASTHENIA", "CHEST PAIN", "FATIGUE", 
"OEDEMA PERIPHERAL", "MILD", "MODERATE", "NONE", "POSSIBLE", 
"PROBABLE", "REMOTE", "N")), class = "data.frame", row.names = c(NA, 
-20L))

密谋

fig <- plot_ly(
    type = "sankey",
    domain = list(
      x =  c(0,1),
      y =  c(0,1)
    ),
    orientation = "h",
    valueformat = ".0f",
    valuesuffix = "TWh",

    node = list(
      label = nodes$name,
      pad = 15,
      thickness = 15,
      line = list(
        color = "black",
        width = 0.5
      )
    ),

    link = list(
      source = data_long$source,
      target = data_long$target,
      value =  data_long$value 
    )
  ) 
fig <- fig %>% layout(
    title = "aesoc",
    font = list(
      size = 10
    ),
    xaxis = list(showgrid = F, zeroline = F),
    yaxis = list(showgrid = F, zeroline = F)
)

fig