ioError [DioErrorType.DEFAULT]: FormatException: Invalid character in cookie value, code unit: '32' (at character 5)

[Shwise]

New Issue Checklist

• I have searched for a similar issue in the project and found none

Issue Info

Info	Value
Platform Name	e.g. flutter / ios / android	flutter
Platform Version	e.g. 1.5.0 / 12.0 / 9.0	latest
Dio Version	e.g. 2.1.0 / 1.0.17	latest
Android Studio / Xcode Version	e.g. Android Studio 3.3.2 / Xcode 10.2.1	N/A
Repro rate	e.g. all the time (100%) / sometimes x% / only once	100%
Repro with our demo prj	e.g. does it happen with our demo project?	N/A
Demo project link	e.g. link to a demo project that highlights the issue

Issue Description and Steps

Dio (with cookie jar plugin) get request reports "Invalid character in cookie value" but references a header that is not a cookie at all, but "last-modified".

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. If this is still an issue, please make sure it is up to date and if so, add a comment that this is still an issue to keep it open. Thank you for your contributions.

[woelmer]

This is still an issue for me

[effusiveperiscope]

This is also an issue for me.