OctoPrint not saving any settings

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1

Since I first started to use OctoPrint (which was just a few months ago) I have the issue that whatever settings I change keep disappearing after I reboot the Pi. With "settings" I am talking about the timelapse settings as well as the g-code scripts. Changes on the printer profile seem to work.

I am using OctoPrint on a Raspberry Pi 3B+ from fresh OctoPi-Installations. Happened at 0.16.0 to 0.17.0. I tried reflashing several times with different versions and tried 2 different SD cards.

I change nothing from the vanilla OctoPi except edit the wpa file for my wifi and setup my printer with the default dialog. I do not use any strange characters in my printer profile name. Even though I change the pi username, I also tried to leave it as default "raspberry". Nothing helps.

I may note: Everything else on the Pi and OctoPrint works fine! I can update it, I can upload files and print, it just looses all normal settings after reboot. Uploaded files, the printer profile and even some test files I create over ssh on the pi stay where they are.

This log is from a complete fresh install, here I tried to save at least 2 times which both did not work.

I include the octoprint.log, if there is any other file you might need, just say so.

octoprint.log (26.6 KB)

I am browsing OcotoPrint using Safari on a Mac but also tried to use Firefox and even Chrome. I am completely clueless on this issue as it looks like there is nothing special in my case so this should affect everyone or no-one? If you have any idea on what might be the issue, feel free to share it.

2

Have you run it in Safe Mode to see if it can save then? If so then one of your plugins is causing the JavaScript to fail.

3

Actually I never tried safe mode before to be honest, so I just did. Exactly the same behavior though, settings gone after reboot.

4

Presumably the POST activity is related to attempting to update the settings.

2019-11-16 10:59:12,152 - octoprint - ERROR - Exception on /api/settings [POST]
Traceback (most recent call last):
  File "/home/pi/oprint/local/lib/python2.7/site-packages/flask/app.py", line 1817, in wsgi_app
    response = self.full_dispatch_request()
  File "/home/pi/oprint/local/lib/python2.7/site-packages/flask/app.py", line 1477, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/home/pi/oprint/local/lib/python2.7/site-packages/flask/app.py", line 1381, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/home/pi/oprint/local/lib/python2.7/site-packages/flask/app.py", line 1475, in full_dispatch_request
    rv = self.dispatch_request()
  File "/home/pi/oprint/local/lib/python2.7/site-packages/flask/app.py", line 1461, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/server/util/flask.py", line 1276, in decorated_view
    return no_firstrun_access(flask_login.login_required(func))(*args, **kwargs)
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/server/util/flask.py", line 1295, in decorated_view
    return func(*args, **kwargs)
  File "/home/pi/oprint/local/lib/python2.7/site-packages/flask_login.py", line 758, in decorated_view
    return func(*args, **kwargs)
  File "/home/pi/oprint/local/lib/python2.7/site-packages/flask_principal.py", line 199, in _decorated
    rv = f(*args, **kw)
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/server/api/settings.py", line 307, in setSettings
    response = _saveSettings(data)
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/server/api/settings.py", line 528, in _saveSettings
    s.saveScript("gcode", name, script.replace("\r\n", "\n").replace("\r", "\n"))
  File "/home/pi/oprint/local/lib/python2.7/site-packages/octoprint/settings.py", line 1798, in saveScript
    f.write(script)
UnicodeEncodeError: 'ascii' codec can't encode character u'\xa0' in position 11: ordinal not in range(128)

As best as I can interpret this, the gcode update part of the Settings page failed because of a \R seen in the line ending of your pasted-in gcode (guessing) which came from a UNICODE-formatted file. @foosel might want to hear about the steps you used, assuming that my analysis is correct.

5

I would certainly be interested to see the gcode script in question, exactly as put into OctoPrint (copy paste between ``` here please, not retyped or anything)

6

Ok I never really distinguished between the gcode script and the webcam. I just cleared my log and produced a fresg log file in which I first tried to save webcam settings, rebooted and then I tried to save my g-code script and rebooted again.

octoprint-new.log (27.7 KB)

The g-code line I paste, I have to admit, is always the same - stored in a "plain-text" .txt document. If I send it to the printer it works though. I know for sure that I copied the line from somewhere before I put in the numbers - which where copied from the OctoPrint Terminal after Calibration.

M301 P28.89 I2.84 D73.35
7

Maybe... from here:

	def saveScript(self, script_type, name, script):
		script_folder = self.getBaseFolder("scripts")
		filename = os.path.realpath(os.path.join(script_folder, script_type, name))
		if not filename.startswith(os.path.realpath(script_folder)):
			# oops, jail break, that shouldn't happen
			raise ValueError("Invalid script path to save to: {filename} (from {script_type}:{name})".format(**locals()))

		path, _ = os.path.split(filename)
		if not os.path.exists(path):
			os.makedirs(path)
		encodedScript = script.encode("utf8") # Added OG
		with atomic_write(filename, "wb", max_permissions=0o666) as f:
			f.write(encodedScript)
8

Okay thanks to your help I managed to get the first problem fixed. Even though I pasted the line of gcode directly to this forum, it did somehow correct the error. However two of the spaces were "non-breaking spaces" (ascii decimal 160 instead of 32).

After I fixed the typo the gcode saved! However the webcam setting still gets lost.

After I fixed the gcode setting I reflashed the sd card - even on a fresh image which has never seen the bad character in a gcode webcam still does not save. I didnt have the time though to investigate which other settings do work or do not work. I will sure keep you updated as soon as I find something new.

A big thank you so far for your help to get the first issue sorted out! :slight_smile:

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