The error information is as follows
Execution failed for task ':app:mergeExtDexDebug'. Could not resolve all files
for configuration ':app:debugRuntimeClasspath'. Failed to transform artifact
'butterknife-runtime.aar (com.jakewharton:butterknife-runtime:10.1.0)' to match
attributes {artifactType=android-dex, dexing-is-debuggable=true,
dexing-min-sdk=15} Execution failed for DexingTransform:
Error while dexing.
solve : For all Module join jdk1.8

stay build.gradle Of android Add the code below It can be solved
compileOptions { sourceCompatibility = '1.8' targetCompatibility = '1.8' }