Can't locate JSON/RPC/Legacy/Server/CGI.pm in @INC
As per my search this issue was solved in Fedora ~17. I am on Fedora 23.
Fedora 23
Bugzilla 4.4.12-1.fc23 (installed via dnf)
============= /usr/share/bugzilla/checksetup.pl --check-modules =============
/usr/share/bugzilla/checksetup.pl --check-modules
* This is Bugzilla 4.4.12 on perl 5.22.1
* Running on Linux 4.4.7-300.fc23.x86_64 #1 SMP Wed Apr 13 02:52:52 UTC 2016
Checking perl modules...
Checking for CGI.pm (v3.51) ok: found v4.21
Checking for Digest-SHA (any) ok: found v5.95
Checking for TimeDate (v2.23) ok: found v2.24
Checking for DateTime (v0.28) ok: found v1.18
Checking for DateTime-TimeZone (v0.71) ok: found v1.93
Checking for DBI (v1.614) ok: found v1.633
Checking for Template-Toolkit (v2.22) ok: found v2.26
Checking for Email-Send (v2.04) ok: found v2.201
Checking for Email-MIME (v1.904) ok: found v1.934
Checking for URI (v1.37) ok: found v1.69
Checking for List-MoreUtils (v0.32) ok: found v0.413
Checking for Math-Random-ISAAC (v1.0.1) ok: found v1.004
Checking available perl DBD modules...
Checking for DBD-SQLite (v1.29) ok: found v1.48
Checking for DBD-Oracle (v1.19) not found
Checking for DBD-mysql (v4.001) ok: found v4.033
Checking for DBD-Pg (v2.7.0) ok: found v3.5.3
The following Perl modules are optional:
Checking for GD (v1.20) ok: found v2.56
Checking for Chart (v2.1.0) ok: found v2.4.10
Checking for Template-GD (any) ok: found v1.56
Checking for GDTextUtil (any) ok: found v0.86
Checking for GDGraph (any) ok: found v1.49
Checking for MIME-tools (v5.406) ok: found v5.506
Checking for libwww-perl (any) ok: found v6.15
Checking for XML-Twig (any) ok: found v3.49
Checking for PatchReader (v0.9.6) ok: found v0.9.6
Checking for perl-ldap (any) ok: found v0.65
Checking for Authen-SASL (any) ok: found v2.16
Checking for Net-SMTP-SSL (v1.01) ok: found v1.03
Checking for RadiusPerl (any) ok: found v0.24
Checking for SOAP-Lite (v0.712) ok: found v1.19
Checking for XMLRPC-Lite (v0.712) ok: found v0.717
Checking for JSON-RPC (any) ok: found v1.06
Checking for JSON-XS (v2.0) ok: found v3.01
Checking for Test-Taint (any) ok: found v1.06
Checking for HTML-Parser (v3.67) ok: found v3.71
Checking for HTML-Scrubber (any) ok: found v0.15
Checking for Encode (v2.21) ok: found v2.80
Checking for Encode-Detect (any) ok: found v1.01
Checking for Email-Reply (any) ok: found v1.203
Checking for HTML-FormatText-WithLinks (v0.13) ok: found v0.15
Checking for TheSchwartz (v1.07) ok: found v1.12
Checking for Daemon-Generic (any) ok: found v0.84
Checking for File-Slurp (v9999.13) ok: found v9999.19
Checking for mod_perl (v1.999022) ok: found v2.000009
Checking for Apache-SizeLimit (v0.96) ok: found v0.97
Checking for File-MimeInfo (any) ok: found v0.27
Checking for IO-stringy (any) ok: found v2.111
Checking for mod_expires (any) ok
Checking for ...
Is the question not clear? Or is more detail needed? Why is "apachectl configtest" failing looking for the Legacy RPC when clearly the new JSON-RPC v1.06 was found the bugzilla check?