🐛 Bug: Map not showing in production (Flutter Web + OMS Plugin)

[Olvera-Orozco-Miguel-Angel]

Description:
First of all, thank you for this amazing mapping tool.
I’m using the OMS plugin in a Flutter Web project, and everything works perfectly in the development environment.
However, when I deploy the app to Firebase Hosting (production), the map does not display and no actions are performed.

In the browser console, the following error appears:

viewId : 0
frame_map_1
Unrecognized feature: 'cross-origin-anonymous'. main.dart.js:117602
idMap 0
in init _mapId 1 main.dart.js:35096
Uncaught Error main.dart.js:6313
    at mn.brV [as a] (main.dart.js:4543:23)
    at mn.bsd (main.dart.js:4514:10)
    at hA0.gSaE (main.dart.js:117438:32)
    at hA0.aDv (main.dart.js:117382:19)
    at main.dart.js:117872:15
    at ay7.a (main.dart.js:51421:63)
    at Object.cw (main.dart.js:5107:10)
    at i9.bDx (main.dart.js:117882:19)
    at i9.Pe (main.dart.js:117821:19)

POST webchannel_connection.ts:294
https://firestore.googleapis.com/google.firestore.v1.Firestore/Listen/...
net::ERR_BLOCKED_BY_CLIENT

Additional details:

Environment: Flutter Web

Hosting: Firebase Hosting

OMS version: Latest version (recently updated)

Works perfectly in development mode — the issue only occurs in production.

[liodali]

when you build your app in release mode locally does it work? did you try to host it with ngnix ?

[Olvera-Orozco-Miguel-Angel]

Yes, it works locally. We haven’t tried any other hosting service. What happens is that we would like to only use Firebase Hosting as a service, although in the future we will consider Nginx as an alternative.

---

I was checking problem number 427 and it says this:

'Finally after hours of searching through the internet I found a workaround to solve the problem. If I copy the "packages" folder inside the "assets" folder into the root-directory, and then publish it on the server, everything is working perfectly fine. So I guess this is a error by the dart2js compiler which is doing something wrong with the path.'

But I don’t understand how to do it. I already copied the packages folder to the root of the project, but it doesn’t work, or I don’t know how to move the folders correctly. I don’t know where to place the packages folder.

[liodali]

can you share you web build folder content?

[liodali]

i will made fix. i will use cdn to load assets as better solution instead of relying on build web from flutter
could be that assets folder of our package was not copied correctly

[liodali]

i made a fix i will publish new version tonight with showcase url and i hope will fix your issue

[Olvera-Orozco-Miguel-Angel]

Thank you for trying to help us. We couldn’t understand why we can’t see the map or the routes in the web application.
We’re using another program or widget to draw routes since we couldn’t solve the issue.
I’ll download your new version, hoping it will fix the problem.
Thank you again — your program is really good.

[liodali]

new version 1.4.3 is available now