I have the same proplem,who can help me on this.
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[2018-04-23 01:42:54 +0000] E The install encountered an error: (XID v4xtdk) The system failed to load the module “Cpanel::SafeFile::LockInfoCache” because of an error: Can't locate Cpanel/SafeFile/LockInfoCache.pm in @INC (@INC contains: /usr/local/cpanel /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5) at (eval 26) line 1.
[2018-04-23 01:42:54 +0000] BEGIN failed--compilation aborted at (eval 26) line 1.
(XID v4xtdk) The system failed to load the module “Cpanel::SafeFile::LockInfoCache” because of an error: Can't locate Cpanel/SafeFile/LockInfoCache.pm in @INC (@INC contains: /usr/local/cpanel /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5) at (eval 26) line 1.
BEGIN failed--compilation aborted at (eval 26) line 1.
2018-04-23 01:42:54 982 (DEBUG): The installation process detected a failed synchronization. The system will reattempt the synchronization with the updatenow.static file...
2018-04-23 01:42:54 988 (FATAL): The installation process was unable to synchronize cPanel & WHM. Verify that your network can connect to httpupdate.cpanel.net and rerun the installer.
Removing /root/installer.lock.
[root@ip-172-31-12-66 opt]# ping httpupdate.cpanel.net
PING httpupdate.cpanel.net (76.76.26.254) 56(84) bytes of data.
64 bytes from unknown.carohosting.net (76.76.26.254): icmp_seq=1 ttl=38 time=26.1 ms
64 bytes from unknown.carohosting.net (76.76.26.254): icmp_seq=2 ttl=38 time=26.2 ms
^C
--- httpupdate.cpanel.net ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 26.193/26.202/26.211/0.009 ms
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[2018-04-23 01:42:54 +0000] E The install encountered an error: (XID v4xtdk) The system failed to load the module “Cpanel::SafeFile::LockInfoCache” because of an error: Can't locate Cpanel/SafeFile/LockInfoCache.pm in @INC (@INC contains: /usr/local/cpanel /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5) at (eval 26) line 1.
[2018-04-23 01:42:54 +0000] BEGIN failed--compilation aborted at (eval 26) line 1.
(XID v4xtdk) The system failed to load the module “Cpanel::SafeFile::LockInfoCache” because of an error: Can't locate Cpanel/SafeFile/LockInfoCache.pm in @INC (@INC contains: /usr/local/cpanel /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5) at (eval 26) line 1.
BEGIN failed--compilation aborted at (eval 26) line 1.
2018-04-23 01:42:54 982 (DEBUG): The installation process detected a failed synchronization. The system will reattempt the synchronization with the updatenow.static file...
2018-04-23 01:42:54 988 (FATAL): The installation process was unable to synchronize cPanel & WHM. Verify that your network can connect to httpupdate.cpanel.net and rerun the installer.
Removing /root/installer.lock.
[root@ip-172-31-12-66 opt]# ping httpupdate.cpanel.net
PING httpupdate.cpanel.net (76.76.26.254) 56(84) bytes of data.
64 bytes from unknown.carohosting.net (76.76.26.254): icmp_seq=1 ttl=38 time=26.1 ms
64 bytes from unknown.carohosting.net (76.76.26.254): icmp_seq=2 ttl=38 time=26.2 ms
^C
--- httpupdate.cpanel.net ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 26.193/26.202/26.211/0.009 ms