universal_html-2.2.2/lib/src/html/dom/element_subclasses.dart:2752:30: Error: The argument type 'String?' can't be assigned to the parameter type 'Object' because 'String?' is nullable and 'Object' isn't. - 'Object' is from 'dart:core'.

[danuprakoso26]

this happens on universal html v2.2.2 and flutter sdk 3.10.0. I tried to downgrade to 3.7.12 but still the same.

[4dcity]

My flutter version is 3.7.7，I got the same error it worked fine yesterday，have no idea what change casued this error...

[raghavsatyadev]

@danuprakoso26 @4dcity include this dependency in your pubspec.yaml. Yesterday a new version was released for this lib and it broke universal_html. This will limit the csslib to be of old version instead of always updating whenever there is a new version

csslib: 0.17.0

[danuprakoso26]

@danuprakoso26 @4dcity include this dependency in your pubspec.yaml. Yesterday a new version was released for this lib and it broke universal_html. This will limit the csslib to be of old version instead of always updating whenever there is a new version csslib: 0.17.0

oh wow. what a life saver. thank you

[4dcity]

@raghavsatyadev problem solved！thanks a lot！ hope the project maintainer can fix this in a newer version

[ashish-d-hh]

Thanks

[mrcsh]

@raghavsatyadev Ugh, I spent hours yesterday trying to figure out why my release branch would not build but my dev branch would. I would have eventually found it but many thanks for the short cut. Also I had other deps on csslib that needed 0.17.2 which also works.

[UsamaSarwar]

I solved this issue after so many hours. Here is the PR with patched fix. https://github.com/dint-dev/universal_html/pull/75

[abdorizak]

@danuprakoso26 @4dcity include this dependency in your pubspec.yaml. Yesterday a new version was released for this lib and it broke universal_html. This will limit the csslib to be of old version instead of always updating whenever there is a new version

csslib: 0.17.0

I really appreciate your solution @raghavsatyadev, but i think this will be temporary fix need to fix from code that cause null string please owners should review this PR #75 and urgently merge. thanks @UsamaSarwar

[sarthak-grappus]

we arent even using it and getting the error and that too at client side 😤

[89pleasure]

still does not work

[VenkataRaoRayala]

Hi all, just downloaded this plugin code, at [universal_html-2.2.2/lib/src/html/dom/element_subclasses.dart:2752] you missed to add ! to text object. I am using flutter 3.1.0. Error got resolved.

change this final parsed = css.parse(text);
to this final parsed = css.parse(text!);

and also please update all the packages to latest in pubpect.yaml file

Please publish this change, it will help us a lot!!!!

[Octavian25]

Hi all, just downloaded this plugin code, at [universal_html-2.2.2/lib/src/html/dom/element_subclasses.dart:2752] you missed to add ! to text object. I am using flutter 3.1.0. Error got resolved.

change this final parsed = css.parse(text); to this final parsed = css.parse(text!);

and also please update all the packages to latest in pubpect.yaml file

Please publish this change, it will help us a lot!!!!

Thank you very much, this change has been extremely helpful and works well. I kindly request the developers to publish these changes.

[RoyalCoder88]

Please fix this issue, have the same issue :(

Launching lib\main.dart on SM A908B in debug mode...
../../../AppData/Local/Pub/Cache/hosted/pub.dev/universal_html-2.2.2/lib/src/html/dom/element_subclasses.dart:2752:30: Error: The argument type 'String?' can't be assigned to the parameter type 'Object' because 'String?' is nullable and 'Object' isn't.
 - 'Object' is from 'dart:core'.
    final parsed = css.parse(text);
                             ^
Target kernel_snapshot failed: Exception

> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 37s
Running Gradle task 'assembleDebug'...                             38.8s
Exception: Gradle task assembleDebug failed with exit code 1

Thanks in advance!

[Mike-3]

I have the same exception.

[samumzizi]

Yes, this is what I did too (adding the exclamation mark) and it worked.

[rymesaint]

i have the same problem after upgraded the flutter

[Morpa]

Here the same problem is happening. Even updating to the latest version. I saw that the csslib is already with the version 0.17.3

[brux88]

i have the same problem

[iameerhamza]

@danuprakoso26 @4dcity include this dependency in your pubspec.yaml. Yesterday a new version was released for this lib and it broke universal_html. This will limit the csslib to be of old version instead of always updating whenever there is a new version

csslib: 0.17.0

it didnt work while building app for ios

[raghavsatyadev]

@danuprakoso26 @4dcity include this dependency in your pubspec.yaml. Yesterday a new version was released for this lib and it broke universal_html. This will limit the csslib to be of old version instead of always updating whenever there is a new version csslib: 0.17.0

it didnt work while building app for ios

May be some other dependency is causing the issue on your side as we have successfully made the builds and pushed

[adrianvintu]

The fix for me was:

dependency_overrides:
  csslib: 0.17.0
  universal_html: 2.0.8

I do not use csslib, but the override is needed.

The 2.0.8 verson number I got from searching for "universal_html" in all pubspec.yaml from the folder c:\Users\<username>\AppData\Local\Pub\Cache\hosted\pub.dev\

There was a single result
c:\Users\<username>\AppData\Local\Pub\Cache\hosted\pub.dev\flick_video_player-0.5.0\pubspec.yaml using universal_html: ^2.0.8

[mftlhn]

Hi all, just downloaded this plugin code, at [universal_html-2.2.2/lib/src/html/dom/element_subclasses.dart:2752] you missed to add ! to text object. I am using flutter 3.1.0. Error got resolved.

change this final parsed = css.parse(text); to this final parsed = css.parse(text!);

and also please update all the packages to latest in pubpect.yaml file

Please publish this change, it will help us a lot!!!!

thanks. it's extremely helpful

[raghavsatyadev]

@danuprakoso26 this issue is now resolved with 2.2.3 version, I think we should close this

[ErnestGaisieViuHealth]

@danuprakoso26 @4dcity include this dependency in your pubspec.yaml. Yesterday a new version was released for this lib and it broke universal_html. This will limit the csslib to be of old version instead of always updating whenever there is a new version

csslib: 0.17.0

Thanks soo much. I've been facing this issue for days. Thumbs up 👍

[shanaka-sync]

The fix for me was:

dependency_overrides:
  csslib: 0.17.0
  universal_html: 2.0.8

I do not use csslib, but the override is needed.

The 2.0.8 verson number I got from searching for "universal_html" in all pubspec.yaml from the folder c:\Users\<username>\AppData\Local\Pub\Cache\hosted\pub.dev\

There was a single result c:\Users\<username>\AppData\Local\Pub\Cache\hosted\pub.dev\flick_video_player-0.5.0\pubspec.yaml using universal_html: ^2.0.8

Thankx dude, This works for me.