ssh check error

[wavelet123]

Hi
When running masterha_check_ssh --conf=/masterha/conf/app1.cnf,got the following error.

Use of uninitialized value in exit at /usr/bin/masterha_check_ssh line 44.

perl version is
This is perl 5, version 26, subversion 3 (v5.26.3) built for x86_64-linux-thread-multi

Can you please take a look?

Thanks