Failed building wheel for Pillow

[ErwanLetard]

Hello,
I m trying to set up the dashboard on my lnd raspibolt.
When I execute pip install -r requirements.txt
I end up with the following error message :
Failed building wheel for Pillow * and then, after some lines
Command "/home/admin/lndash/venv/bin/python2 -u -c "import setuptools, tokenize;file='/tmp/pip-install-l_R2Aw/Pillow/setup.py';f=getattr(tokenize, 'open', open)(file);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, file, 'exec'))" install --record /tmp/pip-record-HfnMfI/install-record.txt --single-version-externally-managed --compile --install-headers /home/admin/lndash/venv/include/site/python2.7/Pillow" failed with error code 1 in /tmp/pip-install-l_R2Aw/Pillow/

I tried to go until the end of the tutorial hoping that was not a big deal but I got that :
[2019-01-06 14:38:37 +0000] [21155] [INFO] Starting gunicorn 19.9.0
[2019-01-06 14:38:37 +0000] [21155] [INFO] Listening at: http://127.0.0.1:8000 (21155)
[2019-01-06 14:38:37 +0000] [21155] [INFO] Using worker: sync
[2019-01-06 14:38:37 +0000] [21167] [INFO] Booting worker with pid: 21167
[2019-01-06 14:38:37 +0000] [21167] [ERROR] Exception in worker process
Traceback (most recent call last):
File "/home/admin/lndash/venv/local/lib/python2.7/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker
worker.init_process()
File "/home/admin/lndash/venv/local/lib/python2.7/site-packages/gunicorn/workers/base.py", line 129, in init_process
self.load_wsgi()
File "/home/admin/lndash/venv/local/lib/python2.7/site-packages/gunicorn/workers/base.py", line 138, in load_wsgi
self.wsgi = self.app.wsgi()
File "/home/admin/lndash/venv/local/lib/python2.7/site-packages/gunicorn/app/base.py", line 67, in wsgi
self.callable = self.load()
File "/home/admin/lndash/venv/local/lib/python2.7/site-packages/gunicorn/app/wsgiapp.py", line 52, in load
return self.load_wsgiapp()
File "/home/admin/lndash/venv/local/lib/python2.7/site-packages/gunicorn/app/wsgiapp.py", line 41, in load_wsgiapp
return util.import_app(self.app_uri)
File "/home/admin/lndash/venv/local/lib/python2.7/site-packages/gunicorn/util.py", line 350, in import_app
import(module)
File "/home/admin/lndash/main.py", line 2, in
import libs.rpc_pb2 as ln
File "/home/admin/lndash/libs/rpc_pb2.py", line 6, in
from google.protobuf.internal import enum_type_wrapper
ImportError: No module named google.protobuf.internal
[2019-01-06 14:38:37 +0000] [21167] [INFO] Worker exiting (pid: 21167)
[2019-01-06 14:38:37 +0000] [21155] [INFO] Shutting down: Master
[2019-01-06 14:38:37 +0000] [21155] [INFO] Reason: Worker failed to boot.

Any ideas ?

Thank you

[djmelik]

It appears that you are missing the libjpeg-dev library which is dependent by Pillow, you can install them by running the following command: apt-get install libjpg-dev

I will update the README file and include this library. In the meantime, I am also looking into rendering the QR codes via javascript vs within Flask, see the suggestion in: #1.

[djmelik]

Can you test the latest changes? I've replaced Flask's QR code generator for qrcodejs. We no longer depend on Pillow.

[ErwanLetard]

I m currently at work, ill try tonight. I'll get to you on twitter if you don't mind.

[djmelik]

I'm going to close out this ticket as I'm confident the issue has been resolved, Pillow was removed from requirements.txt in the recent commit.