Running examples in 'netmeta-Ex.R' failed
The error most likely occurred in:

> ### Name: hasse
> ### Title: Hasse diagram
> ### Aliases: hasse
> ### Keywords: Hasse diagram hplot
> 
> ### ** Examples
> 
> # Use depression dataset
> #
> data(Linde2015)
> #
> # Define order of treatments
> #
> trts <- c("TCA", "SSRI", "SNRI", "NRI",
+           "Low-dose SARI", "NaSSa", "rMAO-A", "Hypericum",
+           "Placebo")
> #
> # Outcome labels
> #
> outcomes <- c("Early response", "Early remission")
> #
> # (1) Early response
> #
> p1 <- pairwise(treat = list(treatment1, treatment2, treatment3),
+                event = list(resp1, resp2, resp3),
+                n = list(n1, n2, n3),
+                studlab = id, data = Linde2015, sm = "OR")
Warning: Comparisons with missing TE / seTE or zero seTE will not be considered in network meta-analysis.
Comparisons will not be considered in network meta-analysis:
 TE seTE studlab treat1  treat2 event1  n1 event2  n2 incr allstudies
 NA   NA      14    TCA    SSRI     NA  10     NA  11    0      FALSE
 NA   NA      18    TCA Placebo     NA  73     NA  73    0      FALSE
 NA   NA      21    TCA  rMAO-A     NA  46     NA  98    0      FALSE
 NA   NA      27   SSRI Placebo     NA  80     NA  81    0      FALSE
 NA   NA      51    TCA  rMAO-A     NA  71     NA  71    0      FALSE
 NA   NA     130    TCA   NaSSa     NA  35     NA  36    0      FALSE
 NA   NA     131   SSRI    SNRI     NA 697     NA 688    0      FALSE
 NA   NA     130    TCA Placebo     NA  35     NA  34    0      FALSE
 NA   NA     130  NaSSa Placebo     NA  36     NA  34    0      FALSE
> #
> net1 <- netmeta(p1,
+                 comb.fixed = FALSE, comb.random = TRUE,
+                 seq = trts, ref = "Placebo")
Warning: Comparisons with missing TE / seTE or zero seTE not considered in network meta-analysis.
Comparisons not considered in network meta-analysis:
 studlab treat1  treat2 TE seTE
      14    TCA    SSRI NA   NA
      18    TCA Placebo NA   NA
      21    TCA  rMAO-A NA   NA
      27   SSRI Placebo NA   NA
      51    TCA  rMAO-A NA   NA
     130  NaSSa Placebo NA   NA
     130    TCA   NaSSa NA   NA
     130    TCA Placebo NA   NA
     131   SSRI    SNRI NA   NA

Warning: Note, treatments within a comparison have been re-sorted in increasing order.
> #
> # (2) Early remission
> #
> p2 <- pairwise(treat = list(treatment1, treatment2, treatment3),
+                event = list(remi1, remi2, remi3),
+                n = list(n1, n2, n3),
+                studlab = id, data = Linde2015, sm = "OR")
Warning: Comparisons with missing TE / seTE or zero seTE will not be considered in network meta-analysis.
Comparisons will not be considered in network meta-analysis:
 TE seTE studlab        treat1  treat2 event1  n1 event2  n2 incr allstudies
 NA   NA       1           TCA    SNRI     NA  75     NA  78  0.0      FALSE
 NA   NA      11           TCA    SSRI     NA 108     NA  99  0.0      FALSE
 NA   NA      14           TCA    SSRI     NA  10     NA  11  0.0      FALSE
 NA   NA      18           TCA Placebo     NA  73     NA  73  0.0      FALSE
 NA   NA      20           TCA    SSRI     NA  55     NA  51  0.0      FALSE
 NA   NA      26          SSRI Placebo     NA 314     NA 154  0.0      FALSE
 NA   NA      53          SSRI   NaSSa     NA 122     NA 121  0.0      FALSE
 NA   NA      56           TCA    SSRI     NA  92     NA 380  0.0      FALSE
 NA   NA      73     Hypericum Placebo     NA  55     NA  57  0.0      FALSE
 NA   NA      90           TCA    SSRI     NA  42     NA  42  0.0      FALSE
 NA   NA      96           TCA    SSRI      0  30      0  29  0.5      FALSE
 NA   NA     121 Low-dose SARI   NaSSa     NA  43     NA  40  0.0      FALSE
 NA   NA     130           TCA   NaSSa     NA  35     NA  36  0.0      FALSE
 NA   NA       1           TCA Placebo     NA  75     NA  76  0.0      FALSE
 NA   NA      11           TCA Placebo     NA 108     NA 101  0.0      FALSE
 NA   NA      53          SSRI Placebo     NA 122     NA 129  0.0      FALSE
 NA   NA     130           TCA Placebo     NA  35     NA  34  0.0      FALSE
 NA   NA       1          SNRI Placebo     NA  78     NA  76  0.0      FALSE
 NA   NA      11          SSRI Placebo     NA  99     NA 101  0.0      FALSE
 NA   NA      53         NaSSa Placebo     NA 121     NA 129  0.0      FALSE
 NA   NA     130         NaSSa Placebo     NA  36     NA  34  0.0      FALSE
> #
> net2 <- netmeta(p2,
+                 comb.fixed = FALSE, comb.random = TRUE,
+                 seq = trts, ref = "Placebo")
Warning: Comparisons with missing TE / seTE or zero seTE not considered in network meta-analysis.
Comparisons not considered in network meta-analysis:
 studlab        treat1  treat2 TE seTE
       1           TCA Placebo NA   NA
       1           TCA    SNRI NA   NA
       1          SNRI Placebo NA   NA
      11          SSRI Placebo NA   NA
      11           TCA Placebo NA   NA
      11           TCA    SSRI NA   NA
      14           TCA    SSRI NA   NA
      18           TCA Placebo NA   NA
      20           TCA    SSRI NA   NA
      26          SSRI Placebo NA   NA
      53         NaSSa Placebo NA   NA
      53          SSRI   NaSSa NA   NA
      53          SSRI Placebo NA   NA
      56           TCA    SSRI NA   NA
      73     Hypericum Placebo NA   NA
      90           TCA    SSRI NA   NA
      96           TCA    SSRI NA   NA
     121 Low-dose SARI   NaSSa NA   NA
     130         NaSSa Placebo NA   NA
     130           TCA   NaSSa NA   NA
     130           TCA Placebo NA   NA

Warning: Note, treatments within a comparison have been re-sorted in increasing order.
> #
> # Partial order of treatment rankings
> #
> po <- netposet(netrank(net1, small.values = "bad"),
+                netrank(net2, small.values = "bad"),
+                outcomes = outcomes)
> #
> # Hasse diagram
> #
> hasse(po)
Error: Library 'hasseDiagram' missing.
  Please use the following R commands for installation:
  source("https://bioconductor.org/biocLite.R")
  biocLite("Rgraphviz")
  install.packages("hasseDiagram")
Execution halted