Getting Error of SqlBuildTask fail while building the database project

Question

Hi Experts,
  I am getting error while building the database project in following manner please help on this.
Error 803 04018: The "SqlBuildTask" task failed unexpectedly.
System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.Data.Tools.Schema.UserInteractionServices.GetElementName(IModelElement element, ElementNameDetails details)
   at Microsoft.Data.Tools.Schema.Sql.SqlUserInteractionServices.GetElementName(IModelElement element, ElementNameDetails details)
   at Microsoft.Data.Tools.Schema.Sql.Sql110UserInteractionServices.GetElementName(IModelElement element, ElementNameDetails details)
   at Microsoft.Data.Tools.Schema.Sql.Validation.MismatchedNameRule.Analyze(SqlSchemaModel sqlSchemaModel, ISqlModelElement sqlElement, SqlRuleSetting ruleSetting, SqlRuleExecutionContext context)
   at Microsoft.Data.Tools.Schema.Sql.Validation.SqlValidationRuleProxy.Analyze(SqlSchemaModel sqlSchemaModel, ISqlModelElement sqlModelElement, SqlRuleSetting ruleSetting, SqlRuleExecutionContext context)
   at Microsoft.Data.Tools.Schema.Sql.Validation.SqlValidationRule.Analyze(SqlRuleSetting ruleSetting, SqlRuleExecutionContext context)
   at Microsoft.Data.Tools.Schema.Sql.RuleEngine.SqlRuleEngine.ExecuteRuleImpl(SqlRuleSetting ruleSetting, SqlRuleExecutionContext context, Predicate`1 suppressProblem, IEnumerable`1& errors)
   at Microsoft.Data.Tools.Schema.Sql.RuleEngine.SqlRuleEngine.ExecuteRules(SqlSchemaModel dataSchemaModel, IEnumerable`1 ruleSettings, IEnumerable`1& errors, Predicate`1 suppressProblem, Func`1 executeCanceled)
   at Microsoft.Data.Tools.Schema.Sql.RuleEngine.SqlRuleEngine.ExecuteRules(SqlSchemaModel dataSchemaModel, IEnumerable`1 rules, IEnumerable`1& errors, Predicate`1 suppressProblem, Func`1 executeCanceled)
   at Microsoft.Data.Tools.Schema.Sql.Build.SqlTaskHost.RunBuildValidation(SqlSchemaModel model, ErrorManager errorContainer, Func`1 buildCanceledQuery, HashSet`1 includedRuleIDs, HashSet`1 excludedRuleIDs)
   at Microsoft.Data.Tools.Schema.Sql.Build.SqlTaskHost.OnRunBuildValidations(ErrorManager errorManager, HashSet`1 includedRuleIds)
   at Microsoft.Data.Tools.Schema.Sql.Build.SqlTaskHost.RunBuildValidations(ErrorManager errorManager, HashSet`1 includedRuleIDs)
   at Microsoft.Data.Tools.Schema.Tasks.Sql.TaskHostLoader.LoadImpl(ITaskHost providedHost, TaskLoggingHelper providedLogger, Boolean runAllBuildTimeValidationRules)
   at Microsoft.Data.Tools.Schema.Tasks.Sql.TaskHostLoader.Load(ITaskHost providedHost, TaskLoggingHelper providedLogger, Boolean runAllBuildTimeValidationRules)
   at Microsoft.Data.Tools.Schema.Tasks.Sql.SqlBuildTask.ExecuteLoadTaskHostStep()
   at Microsoft.Data.Tools.Schema.Tasks.Sql.SqlBuildTask.ExecuteStep(Func`1 step)
   at Microsoft.Data.Tools.Schema.Tasks.Sql.SqlBuildTask.Execute()
   at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
   at Microsoft.Build.BackEnd.TaskBuilder.<ExecuteInstantiatedTask>d__20.MoveNext() C:\Program Files (x86)\MSBuild\Microsoft\VisualStudio\v11.0\SSDT\Microsoft.Data.Tools.Schema.SqlTasks.targets 547 5 ABC_DB
Niraj Sevalkar

Answer 1

Hi Niraj, does this happen for all projects or for one specific project? I'd love to understand if this is a specific bug or if it might be a setup issue. 
If this issues is reproduceable on the latest SSDT bits, I'd suggest capturing the event log for what is going wrong and then opening a connect
bug for this issue at https://connect.microsoft.com/SQLServer/feedback/CreateFeedback.aspx and
use the category "Developer Tools(SSDT, BIDS, etc.)". We're trying to track all bugs through connect so that you can tell when we have fixed the issue and we can request
more information. Please include the event log (instructions on this below) plus any other useful information you can provide, such as an example of exact steps to reproduce the problem.
Gathering an Event Log for SSDT
For diagnostic purposes we would like you to gather an event log for the issue that you are experiencing in SSDT. In order to gather a log and send it to a member of
the team, please follow the steps below.
Open a new command prompt as Administrator.
Run the following command
logman create trace -n DacFxDebug -p "Microsoft-SQLServerDataTools" 0x800 -o "%LOCALAPPDATA%\DacFxDebug.etl" -ets
logman create trace -n SSDTDebug -p "Microsoft-SQLServerDataToolsVS" 0x800 -o "%LOCALAPPDATA%\SSDTDebug.etl" -ets
Run whatever the target/issue scenario is in SSDT.
Go back to the command prompt and run the following commands
logman stop DacFxDebug -ets
logman stop SSDTDebug -ets
The resulting ETL files will be located at %LOCALAPPDATA%\SSDTDebug.etl & %LOCALAPPDATA%\DacFxDebug.etl and can be navigated to using Windows Explorer.
Please attach this file when creating the connect bug
NOTE - These logs will only be used by Microsoft product team members in order to better diagnose the problem you are experiencing
with SSDT and will not be shared elsewhere. If you want to make sure that there is no private information in your ETL file, the SSDTDebug.etl file can be opened and analyzed using the Windows Event Viewer.
To do this, open the Windows Event Viewer application. In the right-hand panel, select Open Saved Log. Navigate to the location where you saved the log, open, and review
the contents of the trace.
Thanks,
Kevin