I am using rtracklayer to import bedpe but had an error:

what's wrong? thanks! There are no empty lines in the file.

cat -A test.bedpe

chr1^I100^I200^Ichr5^I5000^I5100^Ibedpe_example1^I30^I+^I-$

chr9^I1000^I5000^Ichr9^I3000^I3800^Ibedpe_example2^I100^I+^I-$


import("test.bedpe", format="bedpe")

Error in validObject(.Object) : 
  invalid class “GRanges” object: 'seqnames(x)' contains missing values

Thanks, fixed in 1.33.1.