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Hi all,
Has anyone gotten an error message stating “Failed to sync project with cloud for backtest. Canceling…”?. I noticed this error message has been popping up whenever I attempt to backtest after I make edits to scripts in my libraries (not the main.py file).
I made sure to save the scripts before I run the backtest, however, whenever I met with this error, my edits will be lost if I were to refresh or close and reopen the same project folder.
Does it have anything to do with the recent update/upgrade (to speed up backtests?)
Thanks.
E
Aleks
I have the same issue while trying to debug in “QuantConnect Algorithm Environment 3.0 Beta”. Same code runs fine in Environment 2.0.
Cool nemo
+1 often code update and not sync in notebook env
Lucas
I usually fix the issue by just press (CTRL+SHIFT+B) or the build project button on the top right corner. This fixed the issue, and then launch the backtest, it should be working
E Goh
Hi Lucas,
Thanks for the suggestion. I have tried building the project, but unfortunately the issue persisted.
Regards,
E
Michael V
I have the same issue, using 3.0 beta
Fred Painchaud
Hi,
I also have the issue very very often these days.
What worked for me 100% of the time so far is simply to hit the backtest (Play) button again (so here, I am not referring to the build button but the backtest button).
Fred
E Goh
Thanks for the suggestion Fred, that doesn’t seem to work well for mine though. I got that error exactly when i tried to backtest and no matter how many times i clicked on it, it wouldn’t run.
However, i realized that using the Lean CLI would pretty much overcome this issue. Now I’m editing my scripts locally and pushing it to QC when I’m done.
Never got this error since I started using the CLI
Varad Kabade
Hi E Goh,
Thank you for reporting the above problem.
We suggest using ctrl+s to force save the file.
Best,
Varad Kabade
Ansonchowcm
Hi Varad Kabade,
I faced the same problems as E Goh I encounter the error message when I try to backtest : Failed to sync project with cloud for backtest. Canceling...
May I have further suggestions?
Best
Anson
Alexandre Catarino
Hi Community,
Please contact support@quantconnect.com if you experience any issues with the new coding environment, and provide the following information:
- What is your browser and operating system?
- Could you please confirm you've got 3rd party cookies enabled (or working in incognito mode)?
- What is your internet connection, do you connect through a VPN?
- Can you please open the Google Console (Ctrl Shift I) and share if there are any errors in the logs?
- If you can provide a video, it would also help us.
Best regards,
Alex
E Goh
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