Flutter Flow - Custom Action Not working on Android APK

Answer ( For future, if anyone encounters same problem )

I appreciate all the efforts to help, but I managed to find the source of the problem, which was in the following code:

String shelfGuageMap = '{"14": 2, "16": 1.5, "20": 1}';
String angleGuageMap = '{"14": 175, "16": 150, "18": 130}';
Map<String, dynamic> shelfGuages = json.decode(shelfGuageMap);
Map<String, dynamic> angleGuages = json.decode(angleGuageMap);

Apparently, Flutter Flow has difficulty converting Strings to Maps on Android, at least in my case. I modified the logic as follows:

String shelfGuageList = '["11:3", "12:2.5", "13:2.5", "14:2"]';
String angleGuageList = '["11:140", "12:150", "13:160", "14:175"]';
List<String> shelfGuageToList = json.decode(shelfGuageList).cast<String>();
List<String> angleGuageToList = json.decode(angleGuageList).cast<String>();

Although the reason for this issue remains unclear, the code now functions properly on all devices.