undefined method `downcase' for nil:NilClass (NoMethodError)

[inetbiz]

Error

 Liquid Exception: undefined method `downcase' for nil:NilClass in /home/denverpr/new/_layouts/tag-page.html
bundler: failed to load command: jekyll (/home/denverpr/rubyvenv/ruby/2.6/bin/jekyll)
Traceback (most recent call last):
        77: from /home/denverpr/rubyvenv/ruby/2.6/bin/bundle:23:in `<main>'
        76: from /home/denverpr/rubyvenv/ruby/2.6/bin/bundle:23:in `load'
        75: from /home/denverpr/rubyvenv/ruby/2.6/gems/bundler-2.2.27/exe/bundle:37:in `<top (required)>'
        74: from /home/denverpr/rubyvenv/ruby/2.6/gems/bundler-2.2.27/lib/bundler/friendly_errors.rb:128:in `with_friendly_errors'
        73: from /home/denverpr/rubyvenv/ruby/2.6/gems/bundler-2.2.27/exe/bundle:49:in `block in <top (required)>'
        72: from /home/denverpr/rubyvenv/ruby/2.6/gems/bundler-2.2.27/lib/bundler/cli.rb:25:in `start'
        71: from /home/denverpr/rubyvenv/ruby/2.6/gems/bundler-2.2.27/lib/bundler/vendor/thor/lib/thor/base.rb:485:in `start'
        70: from /home/denverpr/rubyvenv/ruby/2.6/gems/bundler-2.2.27/lib/bundler/cli.rb:31:in `dispatch'
        69: from /home/denverpr/rubyvenv/ruby/2.6/gems/bundler-2.2.27/lib/bundler/vendor/thor/lib/thor.rb:392:in `dispatch'
        68: from /home/denverpr/rubyvenv/ruby/2.6/gems/bundler-2.2.27/lib/bundler/vendor/thor/lib/thor/invocation.rb:127:in `invoke_command'
        67: from /home/denverpr/rubyvenv/ruby/2.6/gems/bundler-2.2.27/lib/bundler/vendor/thor/lib/thor/command.rb:27:in `run'
        66: from /home/denverpr/rubyvenv/ruby/2.6/gems/bundler-2.2.27/lib/bundler/cli.rb:477:in `exec'
        65: from /home/denverpr/rubyvenv/ruby/2.6/gems/bundler-2.2.27/lib/bundler/cli/exec.rb:23:in `run'
        64: from /home/denverpr/rubyvenv/ruby/2.6/gems/bundler-2.2.27/lib/bundler/cli/exec.rb:58:in `kernel_load'
        63: from /home/denverpr/rubyvenv/ruby/2.6/gems/bundler-2.2.27/lib/bundler/cli/exec.rb:58:in `load'
        62: from /home/denverpr/rubyvenv/ruby/2.6/bin/jekyll:23:in `<top (required)>'
        61: from /home/denverpr/rubyvenv/ruby/2.6/bin/jekyll:23:in `load'
        60: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/exe/jekyll:15:in `<top (required)>'
        59: from /home/denverpr/rubyvenv/ruby/2.6/gems/mercenary-0.4.0/lib/mercenary.rb:21:in `program'
        58: from /home/denverpr/rubyvenv/ruby/2.6/gems/mercenary-0.4.0/lib/mercenary/program.rb:44:in `go'
        57: from /home/denverpr/rubyvenv/ruby/2.6/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `execute'
        56: from /home/denverpr/rubyvenv/ruby/2.6/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `each'
        55: from /home/denverpr/rubyvenv/ruby/2.6/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `block in execute'
        54: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/commands/build.rb:18:in `block (2 levels) in init_with_program'
        53: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/command.rb:91:in `process_with_graceful_fail'
        52: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/command.rb:91:in `each'
        51: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/command.rb:91:in `block in process_with_graceful_fail'
        50: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/commands/build.rb:36:in `process'
        49: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/commands/build.rb:65:in `build'
        48: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/command.rb:28:in `process_site'
        47: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/site.rb:80:in `process'
        46: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/site.rb:210:in `render'
        45: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/site.rb:530:in `render_docs'
        44: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/site.rb:530:in `each_value'
        43: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/site.rb:531:in `block in render_docs'
        42: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/site.rb:531:in `each'
        41: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/site.rb:532:in `block (2 levels) in render_docs'
        40: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/site.rb:547:in `render_regenerated'
        39: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/renderer.rb:63:in `run'
        38: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/renderer.rb:93:in `render_document'
        37: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/renderer.rb:163:in `place_in_layouts'
        36: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/renderer.rb:194:in `render_layout'
        35: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/renderer.rb:131:in `render_liquid'
        34: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/liquid_renderer/file.rb:36:in `render!'
        33: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/liquid_renderer/file.rb:70:in `measure_time'
        32: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/liquid_renderer/file.rb:37:in `block in render!'
        31: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/liquid_renderer/file.rb:63:in `measure_bytes'
        30: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/liquid_renderer/file.rb:38:in `block (2 levels) in render!'
        29: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/liquid_renderer/file.rb:59:in `measure_counts'
        28: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll-4.2.0/lib/jekyll/liquid_renderer/file.rb:39:in `block (3 levels) in render!'
        27: from /home/denverpr/rubyvenv/ruby/2.6/gems/liquid-4.0.3/lib/liquid/template.rb:220:in `render!'
        26: from /home/denverpr/rubyvenv/ruby/2.6/gems/liquid-4.0.3/lib/liquid/template.rb:207:in `render'
        25: from /home/denverpr/rubyvenv/ruby/2.6/gems/liquid-4.0.3/lib/liquid/template.rb:242:in `with_profiling'
        24: from /home/denverpr/rubyvenv/ruby/2.6/gems/liquid-4.0.3/lib/liquid/template.rb:208:in `block in render'
        23: from /home/denverpr/rubyvenv/ruby/2.6/gems/liquid-4.0.3/lib/liquid/block_body.rb:91:in `render'
        22: from /home/denverpr/rubyvenv/ruby/2.6/gems/liquid-4.0.3/lib/liquid/block_body.rb:103:in `render_node_to_output'
        21: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll_picture_tag-2.0.3/lib/jekyll_picture_tag.rb:71:in `render'
        20: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll_picture_tag-2.0.3/lib/jekyll_picture_tag/output_formats/basic.rb:10:in `to_s'
        19: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll_picture_tag-2.0.3/lib/jekyll_picture_tag/output_formats/picture.rb:66:in `base_markup'
        18: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll_picture_tag-2.0.3/lib/jekyll_picture_tag/output_formats/picture.rb:26:in `build_sources'
        17: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll_picture_tag-2.0.3/lib/jekyll_picture_tag/output_formats/picture.rb:26:in `collect'
        16: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll_picture_tag-2.0.3/lib/jekyll_picture_tag/output_formats/picture.rb:26:in `block in build_sources'
        15: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll_picture_tag-2.0.3/lib/jekyll_picture_tag/output_formats/picture.rb:39:in `build_source'
        14: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll_picture_tag-2.0.3/lib/jekyll_picture_tag/output_formats/basic.rb:57:in `add_srcset'
        13: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll_picture_tag-2.0.3/lib/jekyll_picture_tag/srcsets/basic.rb:36:in `to_s'
        12: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll_picture_tag-2.0.3/lib/jekyll_picture_tag/srcsets/basic.rb:32:in `to_a'
        11: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll_picture_tag-2.0.3/lib/jekyll_picture_tag/srcsets/basic.rb:28:in `files'
        10: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll_picture_tag-2.0.3/lib/jekyll_picture_tag/srcsets/basic.rb:67:in `build_files'
         9: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll_picture_tag-2.0.3/lib/jekyll_picture_tag/srcsets/basic.rb:67:in `all?'
         8: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll_picture_tag-2.0.3/lib/jekyll_picture_tag/images/generated_image.rb:21:in `exists?'
         7: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll_picture_tag-2.0.3/lib/jekyll_picture_tag/images/generated_image.rb:31:in `absolute_filename'
         6: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll_picture_tag-2.0.3/lib/jekyll_picture_tag/images/generated_image.rb:37:in `name'
         5: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll_picture_tag-2.0.3/lib/jekyll_picture_tag/images/generated_image.rb:67:in `id'
         4: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll_picture_tag-2.0.3/lib/jekyll_picture_tag/images/generated_image.rb:71:in `settings'
         3: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll_picture_tag-2.0.3/lib/jekyll_picture_tag/images/generated_image.rb:57:in `quality'
         2: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll_picture_tag-2.0.3/lib/jekyll_picture_tag/images/generated_image.rb:17:in `format'
         1: from /home/denverpr/rubyvenv/ruby/2.6/gems/jekyll_picture_tag-2.0.3/lib/jekyll_picture_tag/images/generated_image.rb:86:in `process_format'
/home/denverpr/rubyvenv/ruby/2.6/gems/jekyll_picture_tag-2.0.3/lib/jekyll_picture_tag/images/source_image.rb:73:in `ext':undefined method `downcase' for nil:NilClass (NoMethodError)

Tag

{% picture blog-feature {{page.featured_image}} --alt {{page.excerpt}} %}

HTML Syntax Test

 <header>
   <figure>
    <figcaption>{{page.featured_image | inspect}}</figcaption>
  </figure>
</header>

Output

<figure><figcaption>"prestashop-tag.jpg"</figcaption></figure>

Gem info

(ruby:2.6)[denverpr@pluto new]$ gem info jekyll_picture_tag

*** LOCAL GEMS ***

jekyll_picture_tag (2.0.3)
    Authors: Robert Wierzbowski, Brendan Tobolaski, Robert Buchberger
    Homepage: https://github.com/rbuchberger/jekyll_picture_tag
    License: BSD-3-Clause
    Installed at: /home/denverpr/rubyvenv/ruby/2.6

    Easy responsive images for Jekyll.

FS Info

(ruby:2.6)[denverpr@pluto _fullsize]$ pwd
/home/denverpr/new/assets/images/_fullsize(ruby:2.6)[denverpr@pluto _fullsize]$ ll prestashop-tag.jpg
-rw-r--r-- 1 denverpr denverpr 65905 Sep 18 10:16 prestashop-tag.jpg

[inetbiz]

from jekyll_picture_tag/images/source_image.rb:73:in ext':undefined method downcase for nil:NilClass (NoMethodError)

 # /home/dave/my_blog/assets/images/somefolder/myimage.jpg
    #                                                     ^^^
    def ext
      @ext ||= File.extname(name)[1..].downcase
    end
``

[rbuchberger]

Hm. Are you sure it's getting passed a filename? What exactly is in the page.featured_image variable?

I thought JPT would fail more gracefully than this, it's probably worth adding a check for that.

[inetbiz]

the loop...

<header>
   <figure>
    <figcaption>{{page.featured_image | inspect}}</figcaption>
  </figure>
</header>

Output

<figure><figcaption>"prestashop-tag.jpg"</figcaption></figure> I also ran it through a mime detection program to see if the jpg was corrupt.

[Atem18]

Hi,

I am using the tag with {% picture "{{ page.featured_image }}" %} which in the blog post is: featured_image: "/uploads/test.jpg"

And I have the following error undefined method `delete_prefix' for nil:NilClass

Could this be linked ?