resize Carrierwave and ImageMagick not working?

Question

Ruby on Rails

Hi all. Who has a problem with resizing and using ImageMagick.
I stopped resizing the photo for 2 days.
Uploads files to public/uploads/tmp
Specifies both original and thumb. The photo is not resized, the thumb is equal to the original photo. And it is not loaded by store_dir. What is the problem?
new.html.erb

<%= form_for @image, html: { multipart: true } do |f| %>
  <%= f.file_field :image %>
  <%= f.submit %>
<% end %>

ImagesController

class ImagesController < ApplicationController

  def new
    @image = Image.new
  end

  def create
    # render text: params
    @image = Image.new(images_params)
    if @image.save
      redirect_to root_path
    else
      render 'new'
    end
  end

  private

  def images_params
    params.require(:image).permit(:image)		
  end
end

Image.rb

class Image < ActiveRecord::Base
  mount_uploader :image, ImageUploader
end

Migration

class CreateImages < ActiveRecord::Migration
  def change
    create_table :images do |t|
    t.string :image

      t.timestamps null: false
    end
  end
end

Image_Uploader

# encoding: utf-8

class ImageUploader < CarrierWave::Uploader::Base

  # Include RMagick or MiniMagick support:
  # include CarrierWave::RMagick
  include CarrierWave::MiniMagick

  # Choose what kind of storage to use for this uploader:
  storage :file
  # storage :fog

  # Override the directory where uploaded files will be stored.
  # This is a sensible default for uploaders that are meant to be mounted:
  def store_dir
    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
  end

  # Provide a default URL as a default if there hasn't been a file uploaded:
  # def default_url
  #   # For Rails 3.1+ asset pipeline compatibility:
  #   # ActionController::Base.helpers.asset_path("fallback/" + [version_name, "default.png"].compact.join('_'))
  #
  #   "/images/fallback/" + [version_name, "default.png"].compact.join('_')
  # end

  # Process files as they are uploaded:
  # process :scale => [200, 300]
  #
  # def scale(width, height)
  #   # do something
  # end

  # Create different versions of your uploaded files:
  version :thumb do
    process :resize_to_fit => [50, 50]
  end

  # Add a white list of extensions which are allowed to be uploaded.
  # For images you might use something like this:
  # def extension_white_list
  #   %w(jpg jpeg gif png)
  # end

  # Override the filename of the uploaded files:
  # Avoid using model.id or version_name here, see uploader/store.rb for details.
  # def filename
  #   "something.jpg" if original_filename
  # end

end

gemfile

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.2.1'
# Use postgresql as the database for Active Record
gem 'pg'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.1.0'
# See https://github.com/rails/execjs#readme for more supported runtimes
# gem 'therubyracer', platforms: :ruby

# Use jquery as the JavaScript library
gem 'jquery-rails'
gem 'carrierwave'
gem 'mini_magick'

Here's more info.
Failed to manipulate with MiniMagick, maybe it's not an image? Original Error: `identify /tmp/mini_magick20150406-31926-mm4j4l.jpg` failed with error: identify: no decode delegate for this image format `JPEG' @ error/constitute.c/ReadImage/501.
How to decide?

Answer 1

Maybe the package was updated unsuccessfully?
Seen this blog.ericlamb.net/2008/11/fix-for-convert-no-decod ... www.imagemagick.org/discourse-server/viewtopic.php... ?
What if you manually do conversions from the console?