We are getting some strange error ```Execution failed for ta

Question

We are getting some strange error ```Execution failed for task common i18n compileDebugKotlin gt java util ConcurrentModificationException no error message ```

Eugen Martynov · Answer

```Caused by java util ConcurrentModificationException at java util TreeMap$PrivateEntryIterator nextEntry TreeMap java 1211 at java util TreeMap$KeyIterator next TreeMap java 1265 at org gradle api internal collections FilteredCollection$FilteringIterator findNext FilteredCollection java 121 at org gradle api internal collections FilteredCollection$FilteringIterator next FilteredCollection java 140 at org gradle api internal collections FilteredCollection size FilteredCollection java 173 at org gradle api internal DefaultDomainObjectCollection size DefaultDomainObjectCollection java 420 at org gradle api internal tasks DefaultRealizableTaskCollection size DefaultRealizableTaskCollection java 239 at kotlin collections CollectionsKt CollectionsKt toList Collections kt 1173 at org jetbrains kotlin compilerRunner GradleCompilerRunner$Companion buildModulesInfo$kotlin gradle plugin GradleKotlinCompilerRunner kt 187 at org jetbrains kotlin compilerRunner GradleCompilerRunner runCompilerAsync GradleKotlinCompilerRunner kt 126 at org jetbrains kotlin compilerRunner GradleCompilerRunner runJvmCompilerAsync GradleKotlinCompilerRunner kt 81 at org jetbrains kotlin gradle tasks KotlinCompile callCompilerAsync$kotlin gradle plugin Tasks kt 449 at org jetbrains kotlin gradle tasks KotlinCompile callCompilerAsync$kotlin gradle plugin Tasks kt 359 at org jetbrains kotlin gradle tasks AbstractKotlinCompile executeImpl Tasks kt 316 at org jetbrains kotlin gradle tasks AbstractKotlinCompile execute Tasks kt 288 at sun reflect NativeMethodAccessorImpl invoke0 Native Method at sun reflect NativeMethodAccessorImpl invoke NativeMethodAccessorImpl java 62 at sun reflect DelegatingMethodAccessorImpl invoke DelegatingMethodAccessorImpl java 43 at java lang reflect Method invoke Method java 498 ```

Matteo Mirk · Answer

is it a gradle problem you could try asking in < C19FD9681|gradle>

chao · Answer

Which version are you using kotlin 1 3 60 fixed an issue for ConcurrentModificationException

Eugen Martynov · Answer

Not yet on 1 3 60

Eugen Martynov · Answer

In MR after we test a bit performance

Alexey Belkov [JB] · Answer

Looks like this should be fixed in 1 3 60 indeed <https youtrack jetbrains com issue KT 32853>