Can't instantiate any LatLng instance

[DelmarZhao]

Every time I try to instantiate an instance of LatLng using the constructor, I get
"Invalid argument(s): Longitude must be between -90 and 90 degrees but was -180.00001532690865"

Regardless of the arguments I pass in. Even LatLng(0,0) will return this error.

[DelmarZhao]

here is my flutter doctor:

[✓] Flutter (Channel beta, v1.6.3, on Linux, locale en_CA.UTF-8)
• Flutter version 1.6.3 at /home/dzhao/Documents/Development/flutter
• Framework revision bc7bc94083 (6 weeks ago), 2019-05-23 10:29:07 -0700
• Engine revision 8dc3a4cde2
• Dart version 2.3.2 (build 2.3.2-dev.0.0 e3edfd36b2)

[✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
• Android SDK at /home/dzhao/Android/Sdk
• Android NDK location not configured (optional; useful for native profiling support)
• Platform android-28, build-tools 28.0.3
• Java binary at: /home/dzhao/Documents/Development/android-studio/jre/bin/java
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1343-b16-5323222)
• All Android licenses accepted.

[✓] Android Studio (version 3.4)
• Android Studio at /home/dzhao/Documents/Development/android-studio
• Flutter plugin version 35.3.1
• Dart plugin version 183.6270
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1343-b16-5323222)

• No issues found!

[MikeMitterer]

Sorry, but I can't support the Dart-Version anymore. At the moment I'm porting this lib to TS. My resources are limited and I have to focus on one language.