3.2 JSON Parse error: Unrecognized token '<' Password bug

Sindarius

@xenon2008 do you happen to have a m551 in your config setting a password. The last person who was having problems removed it and it worked. Wonder if there is an issue with passwords.

xenon2008

hmmm thats an idea, i really had an password in my DWC!
i will try this as soon as i'm at home at the printer!
Thanks alot!

xenon2008

Good Evening,

sorry for the late Reply, but i must work every Day so long..
i now have commented out the Passwort in den config.g and rebooted my Duet 2 Wifi.
Currently i run a testprint, and have a look, but until yet it looks good. I hope it stays that way!

But if so, what i or we can do, so that i can use a Password Protection without any Errors?

Phaedrux

Did your password contain any special characters? Can you test a simple password?

xenon2008

@Phaedrux
No it is only a lowercase Word, nothing special

xenon2008

Good Morning!

Since i have uncommented the Password Line in the config.g it seems to work?

How can i report this as a Bug?

Phaedrux

@xenon2008 Consider it reported. Thanks.

@chrishamm will be glad you were able to replicate it.

chrishamm

I'm sorry but I'm having trouble reproducing this issue. It's all working as expected on Windows (Firefox), Linux (Chromium), and OS X (Safari). Can you confirm that you are using RRF 3.2 and DuetWiFiServer 1.25?

xenon2008

@chrishamm
Yes i can Confirm:
FIRMWARE_NAME: RepRapFirmware for Duet 2 WiFi/Ethernet FIRMWARE_VERSION: 3.2 ELECTRONICS: Duet WiFi 1.02 or later FIRMWARE_DATE: 2021-01-05

Tested with Google Chrome in Windows 10 x64 & on a Android Phone.

fcwilt

Hi,

I'm running 3.2 on a Duet 3 Mini 5

I didn't have M551 so I added it and rebooted.

DWC came up, asked for PW, entered PW - no issues.

I removed M551 and rebooted.

DWC came up - no issues.

Using most recent Chrome.

Frederick

Phaedrux

@xenon2008 can you provide the actual config.g that provokes the error? Maybe there's a special character or something in there.

xenon2008

Sure, should i PM this?

Phaedrux

if you're concerned about sharing the password, sure. You can zip it up and email it to jason@duet3d.com

xenon2008

Hi, i am again!

Is it possible that its a PrusaSlicer issue?
I send the GCODE direct from PrusaSlicer to the Duet, and then i get this error if i click on "Jobs".

I also tried to give a simple Name like Test.gcode to Upload to the DWC, with no other caracters...

xenon2008

Hi i am again,

It really looks like the Error comes from PrusaSlicer....
I have now updated to the latest Version from PrusaSlicer (2.3.0) but it is the same.
If i upload the Gcode direct from the Slicer i get the Error on the Webinterface.
BUT if i see this right, i get this error only then when the Passwort for the DWC is active, without i get no error until yet.

So we have now to find out, if this is a PrusaSlicer or a DWC behavior.

Each time i upload a Gcode, also i have a dissconnect and a reconnect on the DWC, but without a Passwort dialog, even when the Password protection is enabled:

Hope this helps a little bit.

Kind Regards from Austria

EDIT:
maybe this also would be helpful:
https://forum.duet3d.com/topic/20992/prusaslicer-dwc-disconnect-on-upload-test/6

xenon2008

Hello together!

Is there any Update?
I made also a Thread on Github on the PrusaSlicer Page.
Link to the Thread:
https://github.com/prusa3d/PrusaSlicer/issues/5877

Kind Regards

xenon2008 created this issue in prusa3d/PrusaSlicer

open JSON Error when Uploading Gcode to Duet 2 Wifi #5877

dc42

I have just tested this. I find that if I upload from PrusaSlicer 2.3.0 and I have DWC open to the printer on the same PC, It reports "JSON.parse: unexpected character at line 1 column 1 of the JSON data", disconnects briefly, and reconnects immediately.

I will look into the reason for the disconnection.

dc42

This is fixed in DWC 3.2.1RC2.

xenon2008

@dc42 thank you!