Error with executing findvalues method on HTML::TreeBuilder::XPath

igoryonya has asked for the wisdom of the Perl Monks concerning the following question:

use HTML::TreeBuilder::XPath;

my $resp_obj = HTML::TreeBuilder::XPath->new_from_url(shift);

for my $el ($resp_obj->findvalues('/*')){ #Some XPpath in singlequotes
    print "$el\n", 'x' x 30, "\n";

}
[download]

so doing:

fetch_url_xpath.pl 'http://some.url/path/file.html'
[download]

gives me this:
Can't locate object method "string_value" via package "HTML::TreeBuilder::XPath::Root" at /usr/share/perl5/XML/XPathEngine/NodeSet.pm line 141

Comment on Error with executing findvalues method on HTML::TreeBuilder::XPath Select or Download Code

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Re: Error with executing findvalues method on HTML::TreeBuilder::XPath by choroba (Cardinal) on Jan 06, 2017 at 14:23 UTC
I tried with several different URLs and XPath expressions, but I haven't been able to reproduce the error. Can you provide more details? ($q=q:Sq=~/;[c](.)(.)/;chr(-\|\|-\|5+lengthSq)`"S\|oS2"`map{chr \|+ord }map{substrSq`S_+\|`\|}3E\|-\|`7**2-3:)=~y+S\|`+$1,++print+eval$q,q,a, [download]	[reply] [d/l]
Re^2: Error with executing findvalues method on HTML::TreeBuilder::XPath by igoryonya (Pilgrim) on Jan 08, 2017 at 12:40 UTC
Well, I don't really know, what else to add. This is the complete code, except, I also have a shebang at the top: `#!/usr/bin/env perl` [download] perl: 5, version 22, subversion 1 (v5.22.1) built for x86_64-linux-gnu-thread-multi OS: Ubuntu 16.04.1 LTS; x86_64 Once, I've wrote that code, I've tested it and it didn't work, so that's as far, as I've got to. I only tried XPaths: '/' and '/*', on different (working and 404 urls) - same result with the same error. After that, I thought, that I have some lib dependency problem, so I tried to install the libs and related sublibs , mentioned in error message and, some of them said, that they were up to date, some updated, but the same error after update. Now I'm trying to upgrade all of the libs with cpan util's command 'upgrade' to see if it helps, but it's taking a long time. I don't have a very fast inet. Perhaps, I have some library corrupted.	[reply] [d/l]
Re^3: Error with executing findvalues method on HTML::TreeBuilder::XPath by Corion (Patriarch) on Jan 08, 2017 at 13:14 UTC
You could maybe add the URL you're trying to fetch, or even better, the HTML that is served from that URL. Maybe fetching the URL fails and thus the whole thing never gets kicked off.	[reply]
Re^4: Error with executing findvalues method on HTML::TreeBuilder::XPath by Anonymous Monk on Jan 08, 2017 at 13:28 UTC
Re^3: Error with executing findvalues method on HTML::TreeBuilder::XPath by Anonymous Monk on Jan 08, 2017 at 13:23 UTC
Use new_from_content for test	[reply]