Error: Unknown error occurred when calling saveChanges. in JSDO

We are using Kendo + JSDO in our application.

While deleting a record we are receiving an error given below.

core.js:1673 ERROR Error: Uncaught (in promise): Error: Unknown error occurred when calling saveChanges. Error: Unknown error occurred when calling saveChanges. at DataSource.push../node_modules/@progress/jsdo-angular/lib/progress.data.angular.js.DataSource.normalizedErrorObj (progress.data.angular.js:656) at progress.data.angular.js:519 at ZoneDelegate../node_modules/zone.js/dist/zone.js.ZoneDelegate.invoke (zone.js:388) at Object.onInvoke (core.js:3820) at ZoneDelegate../node_modules/zone.js/dist/zone.js.ZoneDelegate.invoke (zone.js:387) at Zone../node_modules/zone.js/dist/zone.js.Zone.run (zone.js:138) at zone.js:872 at ZoneDelegate../node_modules/zone.js/dist/zone.js.ZoneDelegate.invokeTask (zone.js:421) at Object.onInvokeTask (core.js:3811) at ZoneDelegate../node_modules/zone.js/dist/zone.js.ZoneDelegate.invokeTask (zone.js:420) at resolvePromise (zone.js:814) at zone.js:724 at progress.data.angular.js:518 at ZoneDelegate../node_modules/zone.js/dist/zone.js.ZoneDelegate.invoke (zone.js:388) at Object.onInvoke (core.js:3820) at ZoneDelegate../node_modules/zone.js/dist/zone.js.ZoneDelegate.invoke (zone.js:387) at Zone../node_modules/zone.js/dist/zone.js.Zone.run (zone.js:138) at zone.js:872 at ZoneDelegate../node_modules/zone.js/dist/zone.js.ZoneDelegate.invokeTask (zone.js:421) at Object.onInvokeTask (core.js:3811)

The code that performs the delete operation is as below :

this.datasource.saveChanges()
.subscribe((response: DataResult) => {

}, (error, response) => {
// this.dataSource.eTTtemp.getErrors();
});


However , when we do a getErrors(), we get blank for a particular scenario while for many others we are getting valid errors when getErrors() are called. Moreover 'error' returns the above error message in the scenario that returns blank getErrors();

Any help would be appreciated.

Continue reading...