Issues with reconstruction on custom media

[nconrad]

User tried run reconstruction with custom media (built from UI) and gapfilling failed.

Standard error:

Use of uninitialized value $Item in concatenation (.) or string at /disks/p3c/deployment/lib/Bio/KBase/ObjectAPI/utilities.pm line 332.
Type retrieved (string) does not match specified type (media)! at /disks/p3c/deployment/lib/Bio/KBase/ObjectAPI/utilities.pm line 183.
Bio::KBase::ObjectAPI::utilities::error("Type retrieved (string) does not match specified type (media)!") called at /disks/p3c/deployment/lib/Bio/ModelSEED/ProbModelSEED/ProbModelSEEDHelper.pm line 196
Bio::ModelSEED::ProbModelSEED::ProbModelSEEDHelper::error(Bio::ModelSEED::ProbModelSEED::ProbModelSEEDHelper=HASH(0x3335140), "Type retrieved (string) does not match specified type (media)!") called at /disks/p3c/deployment/lib/Bio/ModelSEED/ProbModelSEED/ProbModelSEEDHelper.pm line 41
...