Can't import and fetch the images when use the File tool

[HXC2020]

When I begin with metis, or metis mask to Fetch file list or Import image, METIS suddenly quits, and has the below error message:

Error in PDL::Slices::_clump_int: input parameter 'PARENT' is null at ufunc.pd line 565.
PDL::max(PDL=SCALAR(0xc5e4578)) called at /usr/local/share/perl/5.22.1/Xray/BLA.pm line 212
Xray::BLA::ANON(Xray::BLA=HASH(0x8372520), PDL=SCALAR(0xc5e4578), PDL=SCALAR(0xc5e4fc8)) called at accessor Xray::BLA::elastic_image (defined at /usr/local/share/perl/5.22.1/Xray/BLA.pm line 212) line 10
Xray::BLA::elastic_image(Xray::BLA=HASH(0x8372520), PDL=SCALAR(0xc5e4578)) called at /usr/local/share/perl/5.22.1/Demeter/UI/Metis/Mask.pm line 454
Demeter::UI::Metis::Mask::SelectEnergy(Demeter::UI::Metis::Mask=HASH(0xba16ad8), "", Demeter::UI::Metis=HASH(0x28e02b0), HASH(0xc5e4d70)) called at /usr/local/share/perl/5.22.1/Demeter/UI/Metis/Mask.pm line 372
Demeter::UI::Metis::Mask::restore(Demeter::UI::Metis::Mask=HASH(0xba16ad8), Demeter::UI::Metis=HASH(0x28e02b0)) called at /usr/local/share/perl/5.22.1/Demeter/UI/Metis/Files.pm line 502
Demeter::UI::Metis::Files::single(Demeter::UI::Metis::Files=HASH(0xba0b3d0), Wx::CommandEvent=SCALAR(0x267e6b8), Demeter::UI::Metis=HASH(0x28e02b0)) called at /usr/local/share/perl/5.22.1/Demeter/UI/Metis/Files.pm line 184
Demeter::UI::Metis::Files::ANON(Demeter::UI::Metis::Files=HASH(0xba0b3d0), Wx::CommandEvent=SCALAR(0x267e6b8)) called at /usr/local/bin/metis line 54
eval {...} called at /usr/local/bin/metis line 54

I check the files of Mask.pm, BLA.pm and File.pm, but didn't find what's the problem.