A problem occurred configuring project ‘:app’.

Could not resolve all dependencies for configuration ‘:app:_debugApk’.
A problem occurred configuring project ‘:react-native-splash-screen’.
Could not resolve all dependencies for configuration ‘:react-native-spla sh-screen:_debugPublishCopy’.
Could not find com.android.support:appcompat-v7:26.1.0.
Searched in the following locations:
file:/D:/Program Files/Sdk/extras/android/m2repository/com/androi d/support/appcompat-v7/26.1.0/appcompat-v7-26.1.0.pom
file:/D:/Program Files/Sdk/extras/android/m2repository/com/androi d/support/appcompat-v7/26.1.0/appcompat-v7-26.1.0.jar
file:/D:/RN/seconds/android/sdk-manager/com/android/support/appco mpat-v7/26.1.0/appcompat-v7-26.1.0.jar
Required by:
seconds:react-native-splash-screen:unspecified
Could not find com.android.support:appcompat-v7:26.1.0.
Searched in the following locations:
file:/D:/Program Files/Sdk/extras/android/m2repository/com/androi d/support/appcompat-v7/26.1.0/appcompat-v7-26.1.0.pom
file:/D:/Program Files/Sdk/extras/android/m2repository/com/androi d/support/appcompat-v7/26.1.0/appcompat-v7-26.1.0.jar
file:/D:/RN/seconds/android/sdk-manager/com/android/support/appco mpat-v7/26.1.0/appcompat-v7-26.1.0.jar
Required by:
seconds:react-native-splash-screen:unspecified > com.facebook.rea ct:react-native:0.51.0
老师，运行你那个react-native-splash-screen解决白屏问题，为什么会有这样的错误