when iam running command flutter pub get then iam getting error(Shown in image)

when iam running command flutter pub get then iam getting error(Shown in image)
hello, when should we connect
is it possible to chat via whatsapp or another way like skype
you guys only giving single reply in 2 days
this is my anydesk no 445581600
you can contact me on skype if u dont want to share ur number
https://join.skype.com/invite/vnDghF46GYMO
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Hi,
Yes, your developer connected on Friday and resolved the Flutter error. However, during that time, the app build failed.
They mentioned that the issue was due to outdated code and advised downloading the latest version from CodeCanyon. Even though the code was already the latest, we agreed to download it again. After redownloading the code and reapplying all the changes made by your developer, the app build still failed with the same error.
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