Expect.pm error when using multiline cluster command

[sheepdestroyer]

On fedora 25, pacmanager 4.5.5.7-5
When using any option (All, Block or Selection) of the multi-Line text entry in cluster mode, I get the following lines in my shells :

Use of uninitialized value in pattern match (m//) at /usr/share/perl5/vendor_perl/Expect.pm line 1077.
Use of uninitialized value in string eq at /usr/share/perl5/vendor_perl/Expect.pm line 1086.
Use of uninitialized value in string eq at /usr/share/perl5/vendor_perl/Expect.pm line 1093.
Use of uninitialized value in regexp compilation at /usr/share/perl5/vendor_perl/Expect.pm line 763.

It seems to be the simillar errors as reported here : https://sourceforge.net/p/pacmanager/bugs/272/