Error with Download PDF

Frappe Framework
1

Hi,

I am getting the following error while trying to download a PDF using the demo virtual machine :

Traceback (innermost last):
File “/home/erpnext/frappe-bench/apps/frappe/frappe/app.py”, line 52, in application
response = frappe.api.handle()
File “/home/erpnext/frappe-bench/apps/frappe/frappe/api.py”, line 42, in handle
return frappe.handler.handle()
File “/home/erpnext/frappe-bench/apps/frappe/frappe/handler.py”, line 66, in handle
execute_cmd(cmd)
File “/home/erpnext/frappe-bench/apps/frappe/frappe/handler.py”, line 89, in execute_cmd
ret = frappe.call(method, **frappe.form_dict)
File “/home/erpnext/frappe-bench/apps/frappe/frappe/init.py”, line 531, in call
return fn(*args, **newargs)
File “/home/erpnext/frappe-bench/apps/frappe/frappe/templates/pages/print.py”, line 94, in download_pdf
frappe.local.response.filecontent = get_pdf(html)
File “/home/erpnext/frappe-bench/apps/frappe/frappe/utils/pdf.py”, line 28, in get_pdf
pdfkit.from_string(html, fname, options=options or {})
File “/home/erpnext/frappe-bench/env/local/lib/python2.7/site-packages/pdfkit/api.py”, line 68, in from_string
return r.to_pdf(output_path)
File “/home/erpnext/frappe-bench/env/local/lib/python2.7/site-packages/pdfkit/pdfkit.py”, line 109, in to_pdf
raise IOError(‘wkhtmltopdf reported an error:\n’ + stderr.decode(‘utf-8’))
IOError: wkhtmltopdf reported an error:
Loading pages (1/6)
[> ] 0%
[======> ] 10%
[=============> ] 23%
Warning: Failed to load http://erpnext.erpnext-vm/assets/frappe/css/bootstrap.css (ignore)
[============================================================] 100%
Counting pages (2/6)
[============================================================] Object 1 of 1
Warning: Received createRequest signal on a disposed ResourceObject’s NetworkAccessManager. This migth be an indication of an iframe taking to long to load.
Warning: Received createRequest signal on a disposed ResourceObject’s NetworkAccessManager. This migth be an indication of an iframe taking to long to load.
Resolving links (4/6)
[============================================================] Object 1 of 1
Loading headers and footers (5/6)
Printing pages (6/6)
[> ] Preparing
[==============================> ] Page 1 of 2
[============================================================] Page 2 of 2
Done
Exit with code 1 due to network error: HostNotFoundError

What I did before :

  • Imported the Demo Virtual Machine in Virtual Box.
  • Updated using “Bench Update”.
  • Did the Initial Company Setup
  • Created a Dummy Sales Invoice then tried to download the PDF

any thoughts ?

regards
Akshay

P.S. Using the ERPNext Demo VM created on 15th Sept.

2

edit sites/{site_name}/site_config.json and add "host_name": "localhost"

Be sure to leave a valid JSON file

3

Hi,

I edited file at /sites/erpnext.erpnext-vm/site_config.json added the line as suggestted. But now I am getting the following error :

Traceback (innermost last):
  File "/home/erpnext/frappe-bench/apps/frappe/frappe/app.py", line 52, in application
    response = frappe.api.handle()
  File "/home/erpnext/frappe-bench/apps/frappe/frappe/api.py", line 42, in handle
    return frappe.handler.handle()
  File "/home/erpnext/frappe-bench/apps/frappe/frappe/handler.py", line 66, in handle
    execute_cmd(cmd)
  File "/home/erpnext/frappe-bench/apps/frappe/frappe/handler.py", line 89, in execute_cmd
    ret = frappe.call(method, **frappe.form_dict)
  File "/home/erpnext/frappe-bench/apps/frappe/frappe/__init__.py", line 531, in call
    return fn(*args, **newargs)
  File "/home/erpnext/frappe-bench/apps/frappe/frappe/templates/pages/print.py", line 94, in download_pdf
    frappe.local.response.filecontent = get_pdf(html)
  File "/home/erpnext/frappe-bench/apps/frappe/frappe/utils/pdf.py", line 28, in get_pdf
    pdfkit.from_string(html, fname, options=options or {})
  File "/home/erpnext/frappe-bench/env/local/lib/python2.7/site-packages/pdfkit/api.py", line 68, in from_string
    return r.to_pdf(output_path)
  File "/home/erpnext/frappe-bench/env/local/lib/python2.7/site-packages/pdfkit/pdfkit.py", line 109, in to_pdf
    raise IOError('wkhtmltopdf reported an error:\n' + stderr.decode('utf-8'))
 IOError: wkhtmltopdf reported an error:
Loading pages (1/6)
[>                                                           ] 0%
[======>                                                     ] 10%
[=============>                                              ] 23%
Warning: Failed to load file:///tmp/localhost/assets/frappe/css/bootstrap.css (ignore)
[============================================================] 100%
Counting pages (2/6)                                               
[============================================================] Object 1 of 1
Warning: Received createRequest signal on a disposed ResourceObject's NetworkAccessManager. This migth be an indication of an iframe taking to long to load.
Warning: Received createRequest signal on a disposed ResourceObject's NetworkAccessManager. This migth be an indication of an iframe taking to long to load.
Resolving links (4/6)
[============================================================] Object 1 of 1
Loading headers and footers (5/6)                                           
Printing pages (6/6)
[>                                                           ] Preparing
[==============================>                             ] Page 1 of 2
[============================================================] Page 2 of 2
Done                                                                      
Exit with code 1 due to network error: ContentNotFoundError

My json file looks like :

{
   "db_name": "erpnext",
   "db_password": "blahblah",
   "developer_mode": 1,
   "host_name": "localhost"
}

Am I doing something wrong???

Thanks
Akshay

4

I tried to replicate this. Although it did not give me an error, the style sheet was missing. Can you change the host_name to “localhost:8080” and try?

Changing the host_name fixed the issue for me.

5

Hi,

had the same problem. It was somehow related to the network config.
Please check also:

/etc/network/interfaces

Maybe there is a conflict with the host-machine as well. I first had “bridged” mode as it seemed to be the best solution. But then I changed to NAT and give it a different IP…that solved the problems for me.

6

Just Tried with localhost:8080 did not work. @daniel Will try changing the modes also.

BTW, I am using the network as bridged and DHCP Enabled.

Akshay

7

Was this resolved? I’m getting the same error ‘ContentNotFoundError’ on Digital Ocean while downloading PDF files. Standard production install procedure, developer mode is off.

Thanks, Omkar

Continuing the discussion from Error with Download PDF:

8

Posted bit early… resolved this on running:

bench set-url-root site1.local http://resolvable.site.name

1 Like
9

With newer installs it should not be a problem as the real issue was with nginx config and it’s fixed.

10

I’m using v5 on aws-ec2 and got this error when trying to download PDF:

Traceback (innermost last):
File “/home/ubuntu/frappe-bench/apps/frappe/frappe/app.py”, line 54, in application
response = frappe.api.handle()
File “/home/ubuntu/frappe-bench/apps/frappe/frappe/api.py”, line 50, in handle
return frappe.handler.handle()
File “/home/ubuntu/frappe-bench/apps/frappe/frappe/handler.py”, line 62, in handle
execute_cmd(cmd)
File “/home/ubuntu/frappe-bench/apps/frappe/frappe/handler.py”, line 85, in execute_cmd
ret = frappe.call(method, **frappe.form_dict)
File “/home/ubuntu/frappe-bench/apps/frappe/frappe/init.py”, line 734, in call
return fn(*args, **newargs)
File “/home/ubuntu/frappe-bench/apps/frappe/frappe/templates/pages/print.py”, line 115, in download_pdf
frappe.local.response.filecontent = get_pdf(html)
File “/home/ubuntu/frappe-bench/apps/frappe/frappe/utils/pdf.py”, line 30, in get_pdf
pdfkit.from_string(html, fname, options=options or {})
File “/home/ubuntu/frappe-bench/env/local/lib/python2.7/site-packages/pdfkit/api.py”, line 66, in from_string
configuration=configuration)
File “/home/ubuntu/frappe-bench/env/local/lib/python2.7/site-packages/pdfkit/pdfkit.py”, line 38, in init
self.configuration = (Configuration() if configuration is None
File “/home/ubuntu/frappe-bench/env/local/lib/python2.7/site-packages/pdfkit/configuration.py”, line 18, in init
[‘which’, ‘wkhtmltopdf’], stdout=subprocess.PIPE).communicate()[0].strip()
File “/usr/lib/python2.7/subprocess.py”, line 710, in init
errread, errwrite)
File “/usr/lib/python2.7/subprocess.py”, line 1223, in _execute_child
self.pid = os.fork()
OSError: [Errno 12] Cannot allocate memory

Any idea please?

Tks

11

Looks like low ram

1 Like