No wkhtmltoimage executable found error on google colab

[meechos]

Describe the bug During conversion of string to image (or any other usage of the package), I am faced with the following error:

SError: 
No wkhtmltoimage executable found: "command not found"

I have installed wkhtmltopdf but issue persists. As far as I understand, there is no wkhtmltoimage package to install.

---

To Reproduce

1. Go to google colab
2. Run:

import imgkit
imgkit.from_string('Hello!', 'out.jpg')

3. See error

---------------------------------------------------------------------------
OSError                                   Traceback (most recent call last)
<ipython-input-7-cb1f5c445c5d> in <module>()
----> 1 imgkit.from_string('Hello!', 'out.jpg')

2 frames
/usr/local/lib/python3.7/dist-packages/imgkit/config.py in get_wkhtmltoimage(self)
     55                 raise_from(OSError(wkhtmltoimage_error), io_error)
     56         else:
---> 57             raise OSError(wkhtmltoimage_error)
     58 
     59         return self.wkhtmltoimage

OSError: 
No wkhtmltoimage executable found: "command not found"
If this file exists please check that this process can read it.
Otherwise please install wkhtmltopdf - http://wkhtmltopdf.org

---

Additional info

I have tried manually setting the path to wkhtmltopdf using

path_wkthmltopdf = r'/home/cdsw/.local/lib/python3.6/site-packages/wkhtmltopdf/'
config = imgkit.config(wkhtmltoimage=path_wkthmltopdf)
imgkit.from_string('Hello!', 'out.jpg', config=config)

but with no luck receiving the similar errortrace

IsADirectoryError                         Traceback (most recent call last)
/home/cdsw/.local/lib/python3.6/site-packages/imgkit/config.py in get_wkhtmltoimage(self)
     51             try:
---> 52                 with open(self.wkhtmltoimage):
     53                     pass

IsADirectoryError: [Errno 21] Is a directory: '/home/cdsw/.local/lib/python3.6/site-packages/wkhtmltopdf/'

The above exception was the direct cause of the following exception:

OSError                                   Traceback (most recent call last)
<ipython-input-59-85ebba294e78> in <module>()
     13 <p style='font-size: 0.8em; width: 600px; height: 400px;'>
     14 {content}
---> 15 </p>""", os.getcwd(), options=options, config=config)

/home/cdsw/.local/lib/python3.6/site-packages/imgkit/api.py in from_string(string, output_path, options, toc, cover, css, config, cover_first)
    104         css=css,
    105         config=config,
--> 106         cover_first=cover_first,
    107     )
    108     return rtn.to_img(output_path)

/home/cdsw/.local/lib/python3.6/site-packages/imgkit/imgkit.py in __init__(self, url_or_file, source_type, options, config, **kwargs)
     34         self.source = Source(url_or_file, source_type)
     35         self.config = Config() if not config else config
---> 36         self.wkhtmltoimage = self.config.get_wkhtmltoimage()
     37 
     38         self.options = {}

/home/cdsw/.local/lib/python3.6/site-packages/imgkit/config.py in get_wkhtmltoimage(self)
     53                     pass
     54             except IOError as io_error:
---> 55                 raise_from(OSError(wkhtmltoimage_error), io_error)
     56         else:
     57             raise OSError(wkhtmltoimage_error)

/home/cdsw/.local/lib/python3.6/site-packages/six.py in raise_from(value, from_value)

OSError: 
No wkhtmltoimage executable found: "/home/cdsw/.local/lib/python3.6/site-packages/wkhtmltopdf/"
If this file exists please check that this process can read it.
Otherwise please install wkhtmltopdf - http://wkhtmltopdf.org

---

• OS: Google Colab and Cloudera Workbench (same issue)
• IMGkit Version [1.2.2]
• wkhtmltopdf [0.2]

[KorayUlusan]

I may sound dumb but did you installed wkhtmltopdf/image to google collab and is it in $PATH. The error message semes clear: No wkhtmltoimage executable found: "command not found". Does is really exists?