android - The "CheckDuplicateJavaLibraries" task failed unexpectedly -


i'm trying build app, following error pops up. couple of days ago, had no problems building it.

error       "checkduplicatejavalibraries" task failed unexpectedly. system.io.filenotfoundexception: not find file 'obj\debug\__library_projects__\vectorcompat\library_project_imports\bin\classes.jar'. file name: 'obj\debug\__library_projects__\vectorcompat\library_project_imports\bin\classes.jar' @ system.io.__error.winioerror(int32 errorcode, string maybefullpath) @ system.io.fileinfo.get_length() @ xamarin.android.tasks.monoandroidhelper.sizeandcontentfilecomparer.gethashcode(fileinfo obj) @ system.linq.set`1.internalgethashcode(telement value) @ system.linq.set`1.find(telement value, boolean add) @ system.linq.enumerable.<distinctiterator>d__63`1.movenext() @ system.linq.enumerable.whereselectenumerableiterator`2.movenext() @ system.linq.buffer`1..ctor(ienumerable`1 source) @ system.linq.enumerable.toarray[tsource](ienumerable`1 source) @ xamarin.android.tasks.monoandroidhelper.distinctfilesbycontent(ienumerable`1 filepaths) @ xamarin.android.tasks.checkduplicatejavalibraries.execute() @ microsoft.build.backend.taskexecutionhost.microsoft.build.backend.itaskexecutionhost.execute() @ microsoft.build.backend.taskbuilder.<executeinstantiatedtask>d__26.movenext()    totemandroid             

should delete vectorcompat component , add again? why giving error when built fine couple of days ago?

thanks in advance.

it appears artefacts aren't being copied obj folder, namely vectorcompat's classes.jar. suggest deleting obj folder manually , rebuilding solution.


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