[Koha] web installer error

[alaa Badri]

 how to fix this error
Koha error
						The following fatal error has occurred:
 
                        This version of XML::LibXSLT requires XML::LibXML 1.6 (ABI 1), which is incompatible with currently installed XML::LibXML 1.70 (ABI 2). Please upgrade XML::LibXSLT, XML::LibXML, or both! at /usr/local/lib/perl/5.8.8/XML/LibXML.pm line 49.
BEGIN failed--compilation aborted at /usr/lib/perl5/XML/LibXSLT.pm line 7.
Compilation failed in require at /usr/share/koha/lib/C4/XSLT.pm line 27.
BEGIN failed--compilation aborted at /usr/share/koha/lib/C4/XSLT.pm line 27.
Compilation failed in require at /usr/share/koha/lib/C4/Search.pm line 28.
BEGIN failed--compilation aborted at /usr/share/koha/lib/C4/Search.pm line 28.
Compilation failed in require at /usr/share/koha/lib/C4/Heading.pm line 25.
BEGIN failed--compilation aborted at /usr/share/koha/lib/C4/Heading.pm line 25.
Compilation failed in require at /usr/share/koha/lib/C4/Biblio.pm line 36.
Compilation failed in require at /usr/share/koha/lib/C4/Reserves.pm line 28.
BEGIN failed--compilation aborted at /usr/share/koha/lib/C4/Reserves.pm line 28.
Compilation failed in require at /usr/share/koha/lib/C4/Circulation.pm line 25.
BEGIN failed--compilation aborted at /usr/share/koha/lib/C4/Circulation.pm line 25.
Compilation failed in require at /usr/share/koha/lib/C4/Overdues.pm line 24.
BEGIN failed--compilation aborted at /usr/share/koha/lib/C4/Overdues.pm line 24.
Compilation failed in require at /usr/share/koha/lib/C4/Members.pm line 27.
BEGIN failed--compilation aborted at /usr/share/koha/lib/C4/Members.pm line 27.
Compilation failed in require at /usr/share/koha/lib/C4/Auth.pm line 27.
BEGIN failed--compilation aborted at /usr/share/koha/lib/C4/Auth.pm line 27.
Compilation failed in require at /usr/share/koha/intranet/cgi-bin/mainpage.pl line 23.
BEGIN failed--compilation aborted at /usr/share/koha/intranet/cgi-bin/mainpage.pl line 23.

 		 	   		  
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