Hello, when I try to perform a lollipopPlot on certain genes in my dataset, I get an error: "Error in FUN(X[[i]], ...) : subscript out of bounds"

Here is the command that I am using with the output in bold below:

lollipopPlot(maf = occc, gene = 'ARID1A', AACol='amino_acid_change')

2 transcripts available. Use arguments refSeqID or proteinID to manually specify tx name.
     HGNC refseq.ID protein.ID aa.length Start  End   Label
1: ARID1A NM_006015  NP_006006      2285  1017 1104    ARID
2: ARID1A NM_006015  NP_006006      2285  1975 2231 DUF3518
3: ARID1A NM_139135  NP_624361      2068  1017 1104    ARID
4: ARID1A NM_139135  NP_624361      2068  1758 2014 DUF3518
Using longer transcript NM_006015 for now.
Error in FUN(X[[i]], ...) : subscript out of bounds

Does anyone have any suggestions? I only get this for certain genes.

Many Thanks!

Kelly