[Dancer-users] dancer croaking with a strange error in config.yml

[Mr. Puneet Kishor]

Solved... (it was an invisible character, but see below) --

On Nov 14, 2011, at 6:13 AM, David Precious wrote:

> On Monday 14 November 2011 03:09:01 Puneet Kishor wrote:
>> This is bizarre.
> 
> <snipped fine-looking config> 
> 
>> The above config file works just fine on my laptop, but fails on my server
>> with the following message
>> 
>> $perl bin/app.pl
>> Use of uninitialized value in numeric gt (>) at
>> /Users/punkish/perl5/perlbrew/perls/perl-5.14.1/lib/site_perl/5.14.1/YAML/
>> Loader.pm line 718, 
> [...]
>> Loader.pm line 407, <$IN> line 1. Unable to parse the configuration file:
>> /Users/punkish/Sites/app/config.yml: YAML Error: Invalid element in map
>> Code: YAML_LOAD_ERR_BAD_MAP_ELEMENT
>>   Line: 9
>>   Document: 1
>> at
>> /Users/punkish/perl5/perlbrew/perls/perl-5.14.1/lib/site_perl/5.14.1/YAML.
>> pm line 36 at
>> /Users/punkish/perl5/perlbrew/perls/perl-5.14.1/lib/site_perl/5.14.1/Dance
>> r/Config.pm line 204
> 
> [...]
> 
> Hmm.
> 
> Do you know what version of YAML.pm you have installed on your server?  If 
> it's not the latest, could you try updating it, and see if the problem 
> persists?
> 
> Can you see if you can parse the YAML directly, without Dancer's involvement?
> 
> E.g.:
> 
>  perl -MData::Dump=pp -MYAML -E 'say pp(YAML::LoadFile("config.yml"));'


Update YAML from 0.73 to 0.77

punkish at strata ~/Sites/pbdb$cpanm YAML
--> Working on YAML
Fetching http://search.cpan.org/CPAN/authors/id/I/IN/INGY/YAML-0.77.tar.gz ... OK
Configuring YAML-0.77 ... OK
Building and testing YAML-0.77 ... OK
Successfully installed YAML-0.77 (upgraded from 0.73)
1 distribution installed


Checked directly with YAML... no joy

punkish at strata ~/Sites/pbdb$perl -MData::Dump=pp -MYAML -E 'say pp(YAML::LoadFile("config.yml"));'
Use of uninitialized value in numeric gt (>) at /Users/punkish/perl5/perlbrew/perls/perl-5.14.1/lib/site_perl/5.14.1/YAML/Loader.pm line 716, <$IN> line 1.
Use of uninitialized value in numeric gt (>) at /Users/punkish/perl5/perlbrew/perls/perl-5.14.1/lib/site_perl/5.14.1/YAML/Loader.pm line 717, <$IN> line 1.
Use of uninitialized value in numeric gt (>) at /Users/punkish/perl5/perlbrew/perls/perl-5.14.1/lib/site_perl/5.14.1/YAML/Loader.pm line 717, <$IN> line 1.
Use of uninitialized value in numeric ne (!=) at /Users/punkish/perl5/perlbrew/perls/perl-5.14.1/lib/site_perl/5.14.1/YAML/Loader.pm line 719, <$IN> line 1.
Use of uninitialized value in subtraction (-) at /Users/punkish/perl5/perlbrew/perls/perl-5.14.1/lib/site_perl/5.14.1/YAML/Loader.pm line 724, <$IN> line 1.
Use of uninitialized value in numeric eq (==) at /Users/punkish/perl5/perlbrew/perls/perl-5.14.1/lib/site_perl/5.14.1/YAML/Loader.pm line 359, <$IN> line 1.
Use of uninitialized value in numeric eq (==) at /Users/punkish/perl5/perlbrew/perls/perl-5.14.1/lib/site_perl/5.14.1/YAML/Loader.pm line 359, <$IN> line 1.
Use of uninitialized value in numeric eq (==) at /Users/punkish/perl5/perlbrew/perls/perl-5.14.1/lib/site_perl/5.14.1/YAML/Loader.pm line 359, <$IN> line 1.
Use of uninitialized value in substitution (s///) at /Users/punkish/perl5/perlbrew/perls/perl-5.14.1/lib/site_perl/5.14.1/YAML/Loader.pm line 329, <$IN> line 1.
Use of uninitialized value in substitution (s///) at /Users/punkish/perl5/perlbrew/perls/perl-5.14.1/lib/site_perl/5.14.1/YAML/Loader.pm line 336, <$IN> line 1.
Use of uninitialized value in substitution (s///) at /Users/punkish/perl5/perlbrew/perls/perl-5.14.1/lib/site_perl/5.14.1/YAML/Loader.pm line 340, <$IN> line 1.
Use of uninitialized value in substitution (s///) at /Users/punkish/perl5/perlbrew/perls/perl-5.14.1/lib/site_perl/5.14.1/YAML/Loader.pm line 405, <$IN> line 1.
Use of uninitialized value in substitution (s///) at /Users/punkish/perl5/perlbrew/perls/perl-5.14.1/lib/site_perl/5.14.1/YAML/Loader.pm line 405, <$IN> line 1.
YAML Error: Invalid element in map
   Code: YAML_LOAD_ERR_BAD_MAP_ELEMENT
   Line: 9
   Document: 1
 at /Users/punkish/perl5/perlbrew/perls/perl-5.14.1/lib/site_perl/5.14.1/YAML/Loader.pm line 352


Opened the file again in vi and `:set list`, and bingo! there was a character that looked like ^I, a result of pressing 'tab'

Seems like YAML doesn't like tabs. I deleted that character, and now everything is well.

Many thanks,

--
Puneet Kishor