{"error":"Failed to parse json message."}

[dmetivie]

My app was working well and I was rendering it with

using GenieFramework;
Genie.loadapp(".");
up()

on March 31. Today the loadapp still works but the up() is suspiciously fast and produce at http://127.0.0.1:8000/ a blank page with only this cryptic message {"error":"Failed to parse json message."}.
I tried downgrading Genie without success.

One thing (I hope is not related) is that before I tried using free version of Genie builder, it was loading the app well on a webpage (though something made the display on low code editor not working).
Today it asks for login but the login page https://genielicensing.hosting.genieframework.com/console?eid=GenieBuilder.geniebuilder errors.
Is it related to the other issue? I.e. you somehow need to be logged to use GenieFramework?

If not, related to login, I cannot see the issue that shows for any apps even the MWE here. I have no clue how to debug. After the up, Server.isrunning() return false and

julia> up()

[ Info: 2026-04-16 12:29:46 Web Server starting at http://127.0.0.1:8000 
Genie.Server.ServersCollection(nothing, nothing)

[essenciary]

@dmetivie no, Genie apps have no dependency on GenieBuilder. There's not enough info for me to help debugging either. Can you share the app maybe (invite me to the repo)?

[dmetivie]

Thank you for your response. I think I found the issue it seems that port 127.0.0.1:8000 was used somewhere (cannot understand why) so up was silently failing. With 127.0.0.1:8006 it seems to work

[dmetivie]

So maybe the issue is more like souldn't we get a warning explaining what's wrong when
Genie.Server.ServersCollection(nothing, nothing) is returned?