Can't deploy with error "cannot unmarshal string into Go struct field"

Questions / Help Build debugging
1

My Github action is now terminating the deploy with an error statting: Error failed loading app config from /github/workspace/fly.toml: json: cannot unmarshal string into Go struct field Experimental.experimental.cmd of type []string

I’ve changed very little in my app since the last time I could successfully deploy so I suspect this is once again a bug that Fly needs to work out. I’ve encountered many issues with deploys for the Remix app I’m developing. Anybody else see this error recently? I tried to scale up my app for more memory but that did not fix anything.

2

Hey, sorry for the trouble. This should be fixed in the latest release, v0.0.453, which will come out in the next 20 minutes or so.

3

Is this fixed yet? I’m now getting it.

4

I just started getting this too

5

I’m getting this too. App deploy stopped working because of this error.

6

good morning, i have started getting this error when i try to deploy my app

Error failed loading app config from: /home/runner/work/osc/osc/fly.toml: json: cannot unmarshal string into Go struct field Experimental.experimental.cmd of type []string
7

Hi all, we released flyctl v0.0.459 about 7 hours ago. I suspect that caused these issues. I’m investigating now. We’ll rollback shortly if we don’t find a fix.

8

We have fixed this issue in v0.0.462, which was released a few minutes ago.

1 Like
9

brew installation is still have the previous version with this bug

10

I get this now. Can’t do anything.

# fly version  
WARN WARNING the config file at '/home/px/src/petrolette/fly.toml' is not valid: json: cannot unmarshal object into Go struct field Config.app of type string
flyctl v0.3.47 linux/amd64 Commit: 47d36f94fd09a7dfff25f8c3eca5d8d5e2efc409 BuildDate: 2024-12-05T16:39:52Z
11

Hi… It would probably help to post your full fly.toml file—to give us forum readers the chance to glance over it for malformed fields, odd syntax, etc.

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12

Hi, thanks for your answer! Yes, sorry, here’s my file:


[app]
name = "myapp-super-cool-name"

[[services]]
internal_port = 3000

Also

# file fly.toml              
fly.toml: ASCII text

You’re right I should have started with that ; Thanks a lot for your patience.

1 Like
13

Try changing it to…

app = "myapp-super-cool-name"  # without a `[]` block.
primary_region = "ewr"  # cheapest one.
swap_size_mb = 512

[http_service]  # assuming that you do want http.
  internal_port = 3000

Those are minimalistic but pretty solid default settings; over time, you can flesh it out a little more.

Hope this helps!

1 Like