将bitcoin_base库打包在SDK中，运行没有报错，但是将SDK引入app，运行APP出错 about bitcoin_base HOT 1 CLOSED

报错内容如下，想请问有遇到类型情况的吗，如何解决； 尝试flutter clean，之后flutter pub get；没有解决

`/C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/bitcoin/address/segwit_address.dart:49:29: Error: The getter '$1' isn't defined for the class 'Tuple<int, List>'.

• 'Tuple' is from 'package:blockchain_utils/tuple/tuple.dart' ('/C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/blockchain_utils-1.4.1/lib/tuple/tuple.dart').
• 'List' is from 'dart:core'.
  Try correcting the name to the name of an existing getter, or defining a getter or field named '$1'.
  final version = convert.$1;
  ^^
  /C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/bitcoin/address/segwit_address.dart:53:43: Error: The getter '$2' isn't defined for the class 'Tuple<int, List>'.
• 'Tuple' is from 'package:blockchain_utils/tuple/tuple.dart' ('/C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/blockchain_utils-1.4.1/lib/tuple/tuple.dart').
• 'List' is from 'dart:core'.
  Try correcting the name to the name of an existing getter, or defining a getter or field named '$2'.
  return BytesUtils.toHexString(convert.$2);
  ^^
  /C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/bitcoin/script/input.dart:65:18: Error: The getter '$2' isn't defined for the class 'Tuple<int, int>'.
• 'Tuple' is from 'package:blockchain_utils/tuple/tuple.dart' ('/C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/blockchain_utils-1.4.1/lib/tuple/tuple.dart').
  Try correcting the name to the name of an existing getter, or defining a getter or field named '$2'.
  cursor += vi.$2;
  ^^
  /C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/bitcoin/script/input.dart:65:12: Error: A value of type 'num' can't be assigned to a variable of type 'int'.
  cursor += vi.$2;
  ^
  /C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/bitcoin/script/input.dart:66:72: Error: The getter '$1' isn't defined for the class 'Tuple<int, int>'.
• 'Tuple' is from 'package:blockchain_utils/tuple/tuple.dart' ('/C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/blockchain_utils-1.4.1/lib/tuple/tuple.dart').
  Try correcting the name to the name of an existing getter, or defining a getter or field named '$1'.
  List unlockingScript = txInputRaw.sublist(cursor, cursor + vi.$1);
  ^^
  /C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/bitcoin/script/input.dart:66:67: Error: The argument type 'num' can't be assigned to the parameter type 'int?'.
  List unlockingScript = txInputRaw.sublist(cursor, cursor + vi.$1);
  ^
  /C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/bitcoin/script/input.dart:67:18: Error: The getter '$1' isn't defined for the class 'Tuple<int, int>'.
• 'Tuple' is from 'package:blockchain_utils/tuple/tuple.dart' ('/C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/blockchain_utils-1.4.1/lib/tuple/tuple.dart').
  Try correcting the name to the name of an existing getter, or defining a getter or field named '$1'.
  cursor += vi.$1;
  ^^
  /C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/bitcoin/script/input.dart:67:12: Error: A value of type 'num' can't be assigned to a variable of type 'int'.
  cursor += vi.$1;
  ^
  /C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/bitcoin/script/output.dart:43:18: Error: The getter '$2' isn't defined for the class 'Tuple<int, int>'.
• 'Tuple' is from 'package:blockchain_utils/tuple/tuple.dart' ('/C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/blockchain_utils-1.4.1/lib/tuple/tuple.dart').
  Try correcting the name to the name of an existing getter, or defining a getter or field named '$2'.
  cursor += vi.$2;
  ^^
  /C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/bitcoin/script/output.dart:43:12: Error: A value of type 'num' can't be assigned to a variable of type 'int'.
  cursor += vi.$2;
  ^
  /C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/bitcoin/script/output.dart:44:68: Error: The getter '$1' isn't defined for the class 'Tuple<int, int>'.
• 'Tuple' is from 'package:blockchain_utils/tuple/tuple.dart' ('/C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/blockchain_utils-1.4.1/lib/tuple/tuple.dart').
  Try correcting the name to the name of an existing getter, or defining a getter or field named '$1'.
  List lockScript = txoutputraw.sublist(cursor, cursor + vi.$1);
  ^^
  /C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/bitcoin/script/output.dart:44:63: Error: The argument type 'num' can't be assigned to the parameter type 'int?'.
  List lockScript = txoutputraw.sublist(cursor, cursor + vi.$1);
  ^
  /C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/bitcoin/script/output.dart:45:18: Error: The getter '$1' isn't defined for the class 'Tuple<int, int>'.
• 'Tuple' is from 'package:blockchain_utils/tuple/tuple.dart' ('/C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/blockchain_utils-1.4.1/lib/tuple/tuple.dart').
  Try correcting the name to the name of an existing getter, or defining a getter or field named '$1'.
  cursor += vi.$1;
  ^^
  /C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/bitcoin/script/output.dart:45:12: Error: A value of type 'num' can't be assigned to a variable of type 'int'.
  cursor += vi.$1;
  ^
  /C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/bitcoin/script/script.dart:72:34: Error: The getter '$1' isn't defined for the class 'Tuple<int, int>'.
• 'Tuple' is from 'package:blockchain_utils/tuple/tuple.dart' ('/C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/blockchain_utils-1.4.1/lib/tuple/tuple.dart').
  Try correcting the name to the name of an existing getter, or defining a getter or field named '$1'.
  int dataSize = viAndSize.$1;
  ^^
  /C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/bitcoin/script/script.dart:73:30: Error: The getter '$2' isn't defined for the class 'Tuple<int, int>'.
• 'Tuple' is from 'package:blockchain_utils/tuple/tuple.dart' ('/C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/blockchain_utils-1.4.1/lib/tuple/tuple.dart').
  Try correcting the name to the name of an existing getter, or defining a getter or field named '$2'.
  int size = viAndSize.$2;
  ^^
  /C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/bitcoin/script/transaction.dart:76:18: Error: The getter '$2' isn't defined for the class 'Tuple<int, int>'.
• 'Tuple' is from 'package:blockchain_utils/tuple/tuple.dart' ('/C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/blockchain_utils-1.4.1/lib/tuple/tuple.dart').
  Try correcting the name to the name of an existing getter, or defining a getter or field named '$2'.
  cursor += vi.$2;
  ^^
  /C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/bitcoin/script/transaction.dart:76:12: Error: A value of type 'num' can't be assigned to a variable of type 'int'
  .
  cursor += vi.$2;
  ^
  /C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/bitcoin/script/transaction.dart:79:36: Error: The getter '$1' isn't defined for the class 'Tuple<int, int>'.
• 'Tuple' is from 'package:blockchain_utils/tuple/tuple.dart' ('/C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/blockchain_utils-1.4.1/lib/tuple/tuple.dart').
  Try correcting the name to the name of an existing getter, or defining a getter or field named '$1'.
  for (int index = 0; index < vi.$1; index++) {
  ^^
  /C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/bitcoin/script/transaction.dart:89:21: Error: The getter '$2' isn't defined for the class 'Tuple<int, int>'.
• 'Tuple' is from 'package:blockchain_utils/tuple/tuple.dart' ('/C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/blockchain_utils-1.4.1/lib/tuple/tuple.dart').
  Try correcting the name to the name of an existing getter, or defining a getter or field named '$2'.
  cursor += viOut.$2;
  ^^
  /C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/bitcoin/script/transaction.dart:89:12: Error: A value of type 'num' can't be assigned to a variable of type 'int'
  .
  cursor += viOut.$2;
  ^
  /C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/bitcoin/script/transaction.dart:90:39: Error: The getter '$1' isn't defined for the class 'Tuple<int, int>'.
• 'Tuple' is from 'package:blockchain_utils/tuple/tuple.dart' ('/C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/blockchain_utils-1.4.1/lib/tuple/tuple.dart').
  Try correcting the name to the name of an existing getter, or defining a getter or field named '$1'.
  for (int index = 0; index < viOut.$1; index++) {
  ^^
  /C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/crypto/keypair/ec_private.dart:24:39: Error: The getter '$1' isn't defined for the class 'Tuple<List, PubKey
  Modes>'.
• 'Tuple' is from 'package:blockchain_utils/tuple/tuple.dart' ('/C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/blockchain_utils-1.4.1/lib/tuple/tuple.dart').
• 'List' is from 'dart:core'.
• 'PubKeyModes' is from 'package:blockchain_utils/bip/address/p2pkh_addr.dart' ('/C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/blockchain_utils-1.4.1/lib/bip/address/p2pkh_addr.dart').
  Try correcting the name to the name of an existing getter, or defining a getter or field named '$1'.
  return ECPrivate.fromBytes(decode.$1);
  ^^
  /C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/bitcoin/address/validate.dart:74:27: Error: The getter '$1' isn't defined for the class 'Tuple<List, List>'.
• 'Tuple' is from 'package:blockchain_utils/tuple/tuple.dart' ('/C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/blockchain_utils-1.4.1/lib/tuple/tuple.dart').
• 'List' is from 'dart:core'.
  Try correcting the name to the name of an existing getter, or defining a getter or field named '$1'.
  if (bytesEqual(decode.$1, netVersion)) {
  ^^
  /C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/bitcoin_base-2.0.1/lib/src/bitcoin/address/validate.dart:75:21: Error: The getter '$2' isn't defined for the class 'Tuple<List, List>'.
• 'Tuple' is from 'package:blockchain_utils/tuple/tuple.dart' ('/C:/Users/86130/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/blockchain_utils-1.4.1/lib/tuple/tuple.dart').
• 'List' is from 'dart:core'.
  Try correcting the name to the name of an existing getter, or defining a getter or field named '$2'.
  return decode.$2;
  ^^
  Target kernel_snapshot failed: Exception

FAILURE: Build failed with an exception.

• Where:
  Script 'D:\workspace\git_soft\flutter\packages\flutter_tools\gradle\src\main\groovy\flutter.groovy' line: 1297
• What went wrong:
  Execution failed for task ':app:compileFlutterBuildDebug'.

Process 'command 'D:\workspace\git_soft\flutter\bin\flutter.ba,t'' finished with non-zero exit value 1

• Try:

Run with --stacktrace option to get the stack trace.
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.
`
HI
Please be informed that the Dart SDK versions for 'bitcoin_base' and 'blockchain_utils' have been downgraded to version 2.5. To ensure the compatibility and optimal performance of your project, we recommend cleaning your project and updating to the latest versions available on pub.dev.

from bitcoin_base.