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Android Build an Interactive Story App (Retired) User Input Creating the Project

jinhwa yoo
jinhwa yoo
10,042 Points

I've got error message on Messages

Error:(21, 0) Gradle DSL method not found: 'runProguard()' Possible causes:<ul><li>The project 'InteractiveStory' may be using a version of Gradle that does not contain the method. <a href="open.wrapper.file">Open Gradle wrapper file</a></li><li>The build file may be missing a Gradle plugin. <a href="apply.gradle.plugin">Apply Gradle plugin</a></li>

what's wrong??