I able to reproduce the problem and it seems it’s related to the size of your Business Logic.
I’ve created an internal ticket BKNDLSS-20586 and we are going to fix it asap
It is still not possible to upload the code (with no significant changes). And now the project looks broken and we can’t fix it because we can’t upload even previous version. Which limits are reached? Thank you!
UPD: I have tried to deploy some different versions from last year (they definitely was deployed previously) but even they could not be deployed now.
UPD2: Or maybe 504 during deployment does not matter and code still is deployed? Because I have 504 but see that something was changed in the Backendless custom code UI.
I reproduced your problem with BL that you had send me. In my case during deploy I got “504 Gateway Time-out” but logic was deployed. You can check progress of deployment process by looking at the logs in “Files” service under “logging” directory.
I have reopened internal ticket BKNDLSS-20586 for this issue. We let you know when it will be fixed.