how to set up because I have setup and still errors

[valentine-sys]

flutter pub get
Running "flutter pub get" in acapello...
Because json_serializable ^4.0.1 depends on analyzer >=0.41.2 <2.0.0 and test_core >=0.4.5 <0.4.10 depends on analyzer ^2.4.0, json_serializable ^4.0.1 is incompatible with test_core >=0.4.5 <0.4.10.
And because test >=1.19.4 <1.20.0 depends on test_core 0.4.9 and mocktail >=0.1.0 depends on test ^1.16.0, if json_serializable ^4.0.1 and mocktail >=0.1.0 then test >=1.16.0 <1.19.4-∞ or >=1.20.0 <2.0.0.
(1) So, because test >=1.20.0 depends on test_api 0.4.9 and test >=1.19.3 <1.19.4 depends on test_api 0.4.7, if json_serializable ^4.0.1 and mocktail >=0.1.0 then test_api 0.4.7 or 0.4.9 or test >=1.16.0 <1.19.3.

Because test >=1.16.0-nullsafety.19 <1.16.6 depends on test_api 0.2.19 and test >=1.16.6 <1.16.7 depends on test_api 0.2.20, test >=1.16.0-nullsafety.19 <1.16.7 requires test_api 0.2.19 or 0.2.20.
And because test >=1.16.7 <1.17.0 depends on test_api 0.3.0 and test >=1.17.0 <1.17.6 depends on test_api 0.4.0, test >=1.16.0-nullsafety.19 <1.17.6 requires test_api 0.2.19 or 0.2.20 or 0.3.0 or 0.4.0.
And because test >=1.17.6 <1.17.10 depends on test_api 0.4.1 and test >=1.17.10 <1.17.11 depends on test_api 0.4.2, test >=1.16.0-nullsafety.19 <1.17.11 requires test_api 0.2.19 or 0.2.20 or 0.3.0 or 0.4.0 or 0.4.1 or 0.4.2.
And because test >=1.17.11 <1.18.0 depends on test_api 0.4.3 and test >=1.18.0 <1.18.1 depends on test_api 0.4.4, test >=1.16.0-nullsafety.19 <1.18.1 requires test_api 0.2.19 or 0.2.20 or 0.3.0 or 0.4.0 or 0.4.1 or 0.4.2 or 0.4.3 or 0.4.4.
And because test >=1.18.1 <1.19.0 depends on test_api 0.4.5 and test >=1.19.0 <1.19.3 depends on test_api 0.4.6, test >=1.16.0-nullsafety.19 <1.19.3 requires test_api 0.2.19 or 0.2.20 or 0.3.0 or 0.4.0 or 0.4.1 or 0.4.2 or 0.4.3 or 0.4.4 or 0.4.5 or 0.4.6.
And because if json_serializable ^4.0.1 and mocktail >=0.1.0 then test_api 0.4.7 or 0.4.9 or test >=1.16.0 <1.19.3 (1), if json_serializable ^4.0.1 and mocktail >=0.1.0 then test_api 0.2.19 or 0.2.20 or 0.3.0 or 0.4.0 or 0.4.1 or 0.4.2 or 0.4.3 or 0.4.4 or 0.4.5 or 0.4.6 or 0.4.7 or 0.4.9.
And because flutter_crypto_wallet depends on flutter_test from sdk which depends on test_api 0.4.8, json_serializable ^4.0.1 is incompatible with mocktail >=0.1.0.
So, because flutter_crypto_wallet depends on both json_serializable ^4.1.1 and mocktail ^0.1.0, version solving failed.

pub get failed (1; So, because flutter_crypto_wallet depends on both json_serializable ^4.1.1 and mocktail ^0.1.0, version solving failed.)
exit code 1

--

[acapello] flutter pub get
Running "flutter pub get" in acapello...
Because mocktail >=0.1.0 depends on test ^1.16.0 and test >=1.19.4 <1.20.0 depends on test_core 0.4.9, mocktail >=0.1.0 requires test_core 0.4.9 or test >=1.16.0 <1.19.4-∞ or >=1.20.0 <2.0.0.
And because test_core >=0.4.5 <0.4.10 depends on analyzer ^2.4.0 and json_serializable ^4.0.1 depends on analyzer >=0.41.2 <2.0.0, if mocktail >=0.1.0 and json_serializable ^4.0.1 then test >=1.16.0 <1.19.4-∞ or >=1.20.0 <2.0.0.
(1) So, because test >=1.20.0 depends on test_api 0.4.9 and test >=1.19.3 <1.19.4 depends on test_api 0.4.7, if mocktail >=0.1.0 and json_serializable ^4.0.1 then test_api 0.4.7 or 0.4.9 or test >=1.16.0 <1.19.3.

Because test >=1.16.0-nullsafety.19 <1.16.6 depends on test_api 0.2.19 and test >=1.16.6 <1.16.7 depends on test_api 0.2.20, test >=1.16.0-nullsafety.19 <1.16.7 requires test_api 0.2.19 or 0.2.20.
And because test >=1.16.7 <1.17.0 depends on test_api 0.3.0 and test >=1.17.0 <1.17.6 depends on test_api 0.4.0, test >=1.16.0-nullsafety.19 <1.17.6 requires test_api 0.2.19 or 0.2.20 or 0.3.0 or 0.4.0.
And because test >=1.17.6 <1.17.10 depends on test_api 0.4.1 and test >=1.17.10 <1.17.11 depends on test_api 0.4.2, test >=1.16.0-nullsafety.19 <1.17.11 requires test_api 0.2.19 or 0.2.20 or 0.3.0 or 0.4.0 or 0.4.1 or 0.4.2.
And because test >=1.17.11 <1.18.0 depends on test_api 0.4.3 and test >=1.18.0 <1.18.1 depends on test_api 0.4.4, test >=1.16.0-nullsafety.19 <1.18.1 requires test_api 0.2.19 or 0.2.20 or 0.3.0 or 0.4.0 or 0.4.1 or 0.4.2 or 0.4.3 or 0.4.4.
And because test >=1.18.1 <1.19.0 depends on test_api 0.4.5 and test >=1.19.0 <1.19.3 depends on test_api 0.4.6, test >=1.16.0-nullsafety.19 <1.19.3 requires test_api 0.2.19 or 0.2.20 or 0.3.0 or 0.4.0 or 0.4.1 or 0.4.2 or 0.4.3 or 0.4.4 or 0.4.5 or 0.4.6.
And because if mocktail >=0.1.0 and json_serializable ^4.0.1 then test_api 0.4.7 or 0.4.9 or test >=1.16.0 <1.19.3 (1), if mocktail >=0.1.0 and json_serializable ^4.0.1 then test_api 0.2.19 or 0.2.20 or 0.3.0 or 0.4.0 or 0.4.1 or 0.4.2 or 0.4.3 or 0.4.4 or 0.4.5 or 0.4.6 or 0.4.7 or 0.4.9.
And because flutter_crypto_wallet depends on flutter_test from sdk which depends on test_api 0.4.8, mocktail >=0.1.0 is incompatible with json_serializable ^4.0.1.
So, because flutter_crypto_wallet depends on both json_serializable ^4.1.4 and mocktail ^0.1.0, version solving failed.

pub get failed (1; So, because flutter_crypto_wallet depends on both json_serializable ^4.1.4 and mocktail ^0.1.0, version solving failed.)
exit code 1

--

[acapello] flutter pub get
Running "flutter pub get" in acapello... 560.5s
exit code 0

[JErazo7]

Hi @valentine-sys. What flutter version are you using? This project uses the version 2.2.0. It would be welcome any PR for updating the project to the last flutter version.

[zhanghanke]

edit the file pubspec.yaml:
json_serializable: any