I want to use the GDCRNATools R package. I am trying to use its gdcCEAnalysis function. In the example of this function, the following code is mentioned.

library(GDCRNATools)
 deLNC <- c('ENSG00000260920','ENSG00000242125','ENSG00000261211')
 dePC <- c('ENSG00000043355','ENSG00000109586','ENSG00000144355')
 genes <- c(deLNC, dePC)
 samples <- c('TCGA-2F-A9KO-01', 'TCGA-2F-A9KP-01', 
             'TCGA-2F-A9KQ-01', 'TCGA-2F-A9KR-01', 
             'TCGA-2F-A9KT-01', 'TCGA-2F-A9KW-01')
 rnaExpr <- data.frame(matrix(c(2.7,7.0,4.9,6.9,4.6,2.5,
                     0.5,2.5,5.7,6.5,4.9,3.8,
                     2.1,2.9,5.9,5.7,4.5,3.5,
                     2.7,5.9,4.5,5.8,5.2,3.0,
                     2.5,2.2,5.3,4.4,4.4,2.9,
                     2.4,3.8,6.2,3.8,3.8,4.2),6,6), 
                     stringsAsFactors=FALSE)
 rownames(rnaExpr) <- genes
 colnames(rnaExpr) <- samples

 mirExpr <- data.frame(matrix(c(7.7,7.4,7.9,8.9,8.6,9.5,
                     5.1,4.4,5.5,8.5,4.4,3.5,
                     4.9,5.5,6.9,6.1,5.5,4.1,
                     12.4,13.5,15.1,15.4,13.0,12.8,
                     2.5,2.2,5.3,4.4,4.4,2.9,
                     2.4,2.7,6.2,1.5,4.4,4.2),6,6),
                     stringsAsFactors=FALSE)
 colnames(mirExpr) <- samples
 rownames(mirExpr) <- c('hsa-miR-340-5p','hsa-miR-181b-5p',
                     'hsa-miR-181a-5p', 'hsa-miR-181c-5p',
                     'hsa-miR-199b-5p','hsa-miR-182-5p')

 ceOutput <- gdcCEAnalysis(lnc       = deLNC, 
                         pc          = dePC, 
                         lnc.targets = 'starBase', 
                         pc.targets  = 'starBase', 
                         rna.expr    = rnaExpr, 
                         mir.expr    = mirExpr)

The above mentioned code gives the following output:

Step 1/3: Hypergenometric test done !
Step 2/3: Correlation analysis done !
Step 3/3: Regulation pattern analysis done !

However, if the values in deLNC are changed, the gdcCEAnalys function shows the following error:

deLNC <- c('ENSG00000000003','ENSG00000099869','ENSG00000261211')
#rest of the code is same.

Error in `colnames<-`(`*tmp*`, value = c("lncRNAs", "Genes", "Counts",  : 
  attempt to set 'colnames' on an object with less than two dimensions

Please help me in understanding the cause of this error. The details of the package and function can be found here: https://rdrr.io/bioc/GDCRNATools/src/R/gdcCEAnalysis.R https://rdrr.io/bioc/GDCRNATools/man/gdcCEAnalysis.html