Yum update Python Memory Error

Hi i'm getting this error while executing "yum update"

Code:

ec2-user@indalaterre [~]# sudo yum update
Loaded plugins: priorities, universal-hooks, update-motd, upgrade-helper
EA4                                                                                           | 3.0 kB  00:00:00
cpanel-addons-production-feed                                                                 | 2.9 kB  00:00:00
MariaDB100                                                                                    | 2.9 kB  00:00:00
amzn-main                                                                                     | 2.1 kB  00:00:00
amzn-updates                                                                                  | 2.3 kB  00:00:00
cpanel-plugins                                                                                | 2.9 kB  00:00:00
(1/4): cpanel-addons-production-feed/x86_64/primary_db                                        | 9.4 kB  00:00:00
(2/4): MariaDB100/primary_db                                                                  |  22 kB  00:00:00
(3/4): cpanel-plugins/primary_db                                                              |  37 kB  00:00:00
(4/4): EA4/x86_64/primary_db                                                                  |  31 MB  00:00:02
(1/5): amzn-main/latest/group                                                                 |  35 kB  00:00:00
(2/5): amzn-updates/latest/group                                                              |  35 kB  00:00:00
(3/5): amzn-updates/latest/updateinfo                                                         | 407 kB  00:00:00
(4/5): amzn-updates/latest/primary_db                                                         | 552 kB  00:00:00
(5/5): amzn-main/latest/primary_db                                                            | 3.6 MB  00:00:00
Traceback (most recent call last):
  File "/usr/bin/yum", line 29, in <module>
    yummain.user_main(sys.argv[1:], exit_code=True)
  File "/usr/share/yum-cli/yummain.py", line 365, in user_main
    errcode = main(args)
  File "/usr/share/yum-cli/yummain.py", line 174, in main
    result, resultmsgs = base.doCommands()
  File "/usr/share/yum-cli/cli.py", line 574, in doCommands
    return self.yum_cli_commands[self.basecmd].doCommand(self, self.basecmd, self.extcmds)
  File "/usr/share/yum-cli/yumcommands.py", line 496, in doCommand
    ret = base.updatePkgs(extcmds, update_to=(basecmd == 'update-to'))
  File "/usr/share/yum-cli/cli.py", line 1026, in updatePkgs
    self.update()
  File "/usr/lib/python2.7/dist-packages/yum/__init__.py", line 5107, in update
    updates = self.up.getUpdatesTuples()
  File "/usr/lib/python2.7/dist-packages/yum/__init__.py", line 1091, in <lambda>
    up = property(fget=lambda self: self._getUpdates(),
  File "/usr/lib/python2.7/dist-packages/yum/__init__.py", line 836, in _getUpdates
    self._up = rpmUtils.updates.Updates(self.rpmdb.simplePkgList(), self.pkgSack.simplePkgList())
  File "/usr/lib/python2.7/dist-packages/yum/__init__.py", line 1072, in <lambda>
    pkgSack = property(fget=lambda self: self._getSacks(),
  File "/usr/lib/python2.7/dist-packages/yum/__init__.py", line 790, in _getSacks
    self.plugins.run('exclude')
  File "/usr/lib/python2.7/dist-packages/yum/plugins.py", line 188, in run
    func(conduitcls(self, self.base, conf, **kwargs))
  File "/usr/lib/yum-plugins/priorities.py", line 129, in exclude_hook
    repopkgs_archless = _pkglist_to_dict(conduit.getPackages(repo), repo.priority)
  File "/usr/lib/python2.7/dist-packages/yum/plugins.py", line 688, in getPackages
    return self._base.pkgSack.returnPackages(arg)
  File "/usr/lib/python2.7/dist-packages/yum/packageSack.py", line 495, in returnPackages
    ignore_case=ignore_case)
  File "/usr/lib/python2.7/dist-packages/yum/sqlitesack.py", line 1651, in returnPackages
    pkgobjlist = self._buildPkgObjList(repoid, patterns, ignore_case)
  File "/usr/lib/python2.7/dist-packages/yum/sqlitesack.py", line 46, in newFunc
    return func(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/yum/sqlitesack.py", line 1615, in _buildPkgObjList
    po = self._packageByKeyData(repo, x['pkgKey'], x)
  File "/usr/lib/python2.7/dist-packages/yum/sqlitesack.py", line 753, in _packageByKeyData
    if exclude and self._pkgExcludedRKD(repo, pkgKey, data):
  File "/usr/lib/python2.7/dist-packages/yum/sqlitesack.py", line 673, in _pkgExcludedRKD
    return self._pkgExcludedRKNEVRA(repo, pkgKey, n,e,v,r,a)
  File "/usr/lib/python2.7/dist-packages/yum/sqlitesack.py", line 636, in _pkgExcludedRKNEVRA
    if _excluder_match(exM, match, regexp_match, data, e,v,r,a):
  File "/usr/lib/python2.7/dist-packages/yum/sqlitesack.py", line 112, in _excluder_match
    if _parse_pkg(match, regexp_match, data, e,v,r,a):
  File "/usr/lib/python2.7/dist-packages/yum/sqlitesack.py", line 105, in _parse_pkg
    if regexp_match(item):
MemoryError
Error in atexit._run_exitfuncs:
Traceback (most recent call last):
  File "/usr/lib64/python2.7/atexit.py", line 24, in _run_exitfuncs
    func(*targs, **kargs)
  File "/usr/lib/python2.7/dist-packages/yum/plugins.py", line 180, in run
MemoryError
Error in sys.exitfunc:
Traceback (most recent call last):
  File "/usr/lib64/python2.7/atexit.py", line 24, in _run_exitfuncs
    func(*targs, **kargs)
  File "/usr/lib/python2.7/dist-packages/yum/plugins.py", line 180, in run
    conduitcls = eval(conduitcls)       # Convert name to class object
MemoryError

I tried to clean up with "yum clean all" but the error is still the same.
The cpanel version is the 66.0.14, OS CentOS 6