After upgrading Discourse from version 2 to 3, user mixman68 encountered a loading issue on the client side with no server-side errors. Despite being in safe mode and using a stock theme, the forum remained unresponsive. Arkshine suggested rebuilding the forum from the console, which is a standard step for upgrades. mixman68 confirmed the rebuild worked, but the issue persisted even after upgrading to 3.1.4. They suspected a plugin API version mismatch, referencing the plugin API version in Discourse 3.1.4. Don provided a temporary workaround via a GitHub commit, which mixman68 confirmed resolved the issue. JammyDodger later noted that the problematic commit had been reverted, indicating the fix was addressed in the docker_manager.
Hello all,
We had just upgrade from 2 to 3 our discourse,
It is stock with no plugin except docker_manager
I have this error on client side :
Nothing server side. I can safe mode with no_plugins only
But I cannot determinate which setting cuz this issue
Can you help me please.
Edit : I already deleted all themes components, so I am on full stock theme
Hi, welcome 
There is an issue and I’m afraid you will need to rebuild your forum from the console:
Thank for fast reply 
I need to disable the plugin in yaml ?
Cuz I never upgrade via docker manager
I did ./launch rebuild app
There is no need to turn off the plugin; rebuilding to upgrade Discourse should be enough!
When I go in safe mode, after rebuild, I am on discourse 3.1.4, and I still cannot load the forum
Hello back, I checked, on stable version (3.1.4), plugin api is 1.8.0, maybe I need to specify something to docker_manager to be in phase with Discourse 3.1.4
But how I specify specific tag in plugin command ?
Hello Here is a possible quick solution while the fix is coming to docker_manager: DEV: Use new JS plugin API to add admin sidebar link (#201) · discourse/docker_manager@5a0499a · GitHub
This workaround works fine, thank you 
Cross-posting this here, the problem commit has now been reverted:
