I received following error on Exchange 2016 setup right after the readiness check of the installation complete.

 Error:
 The following error was generated when "$error.Clear(); 
                install-ExchangeSchema -LdapFileName ($roleInstallPath + "Setup\Data\"+$RoleSchemaPrefix + "schema0.ldf")
" was run: "Microsoft.Exchange.Configuration.Tasks.TaskException: There was an error while running 'ldifde.exe' to import the schema file 'C:\Windows\Temp\ExchangeSetup\Setup\Data\PostExchange2003_schema0.ldf'. The error code is: 8224. More details can be found in the error file: 'C:\Users\theman\AppData\Local\Temp\2\ldif.err'
   at Microsoft.Exchange.Configuration.Tasks.Task.ThrowError(Exception exception, ErrorCategory errorCategory, Object targe, String helpUrl)
   at Microsoft.Exchange.Management.Deployment.InstallExchangeSchema.ImportSchemaFile(String schemaMasterServer, String schemaFilePath, String macroName, String macroValue, WriteVerboseDelegate writeVerbose)
   at Microsoft.Exchange.Management.Deployment.InstallExchangeSchema.InternalProcessRecord()
   at Microsoft.Exchange.Configuration.Tasks.Task.<ProcessRecord>b__91_1()
   at Microsoft.Exchange.Configuration.Tasks.Task.InvokeRetryableFunc(String funcName, Action func, Boolean terminatePipelineIfFailed)". 

There error turn outs to be a Domain controller was offline and once I bring that domain controller back to online and restart the Exchange 2016 setup the error disappeared this time