Broken pipeline (Errno::EPIPE)

[sherylxun]

............./var/lib/gems/3.0.0/gems/logstash-perftool-0.1.1/lib/lsperfm/core/run.rb:88:in write': Broken pipe (Errno::EPIPE) from /var/lib/gems/3.0.0/gems/logstash-perftool-0.1.1/lib/lsperfm/core/run.rb:88:in puts'
from /var/lib/gems/3.0.0/gems/logstash-perftool-0.1.1/lib/lsperfm/core/run.rb:88:in block (2 levels) in feed_input_interval' from /var/lib/gems/3.0.0/gems/logstash-perftool-0.1.1/lib/lsperfm/core/run.rb:88:in each'
from /var/lib/gems/3.0.0/gems/logstash-perftool-0.1.1/lib/lsperfm/core/run.rb:88:in block in feed_input_interval' from /var/lib/gems/3.0.0/gems/logstash-perftool-0.1.1/lib/lsperfm/core/run.rb:88:in each'
from /var/lib/gems/3.0.0/gems/logstash-perftool-0.1.1/lib/lsperfm/core/run.rb:88:in feed_input_interval' from /var/lib/gems/3.0.0/gems/logstash-perftool-0.1.1/lib/lsperfm/core/run.rb:61:in feed_input_with'
from /var/lib/gems/3.0.0/gems/logstash-perftool-0.1.1/lib/lsperfm/core/run.rb:45:in block (2 levels) in run' from /usr/lib/ruby/3.0.0/benchmark.rb:308:in realtime'
from /var/lib/gems/3.0.0/gems/logstash-perftool-0.1.1/lib/lsperfm/core/run.rb:44:in block in run' from /usr/lib/ruby/3.0.0/open3.rb:227:in popen_run'
from /usr/lib/ruby/3.0.0/open3.rb:102:in popen3' from /var/lib/gems/3.0.0/gems/logstash-perftool-0.1.1/lib/lsperfm/core/run.rb:30:in run'
from /var/lib/gems/3.0.0/gems/logstash-perftool-0.1.1/lib/lsperfm/core.rb:28:in block in run' from /var/lib/gems/3.0.0/gems/logstash-perftool-0.1.1/lib/lsperfm/core.rb:23:in each'
from /var/lib/gems/3.0.0/gems/logstash-perftool-0.1.1/lib/lsperfm/core.rb:23:in run' from /var/lib/gems/3.0.0/gems/logstash-perftool-0.1.1/lib/lsperfm.rb:18:in invoke'
from /var/lib/gems/3.0.0/gems/logstash-perftool-0.1.1/bin/lsperfm:9:in <top (required)>' from /usr/local/bin/lsperfm:25:in load'
from /usr/local/bin/lsperfm:25:in `

'

Why this error happened when I try to use the default set of test by running the lsperfm from the root of my Logstash installation? Logstash can run successfully.