Providing multiple classes in positionClass fails

[RahulBadenkal]

This is the config i am working with

export const COMMON_TOAST_OVERRIDE: Partial<GlobalConfig> = {
	positionClass: 'admin-container toast-bottom-right', // all toasts container
	toastClass: 'admin-single-toastr-container', // single toast container
	newestOnTop: false,
	maxOpened: 3,
	autoDismiss: true,
	tapToDismiss: false,
	timeOut: 3000,
	extendedTimeOut: 3000
	// disableTimeOut: 'extendedTimeOut'
};

But adding more than 1 class in positionClass field fails with the following error in console

ERROR DOMException: Failed to execute 'add' on 'DOMTokenList': The token provided ('admin-container toast-bottom-right') contains HTML space characters, which are not valid in tokens.
    at Overlay._createPaneElement (http://localhost:4200/vendor.js:71170:24)
    at Overlay.getPaneElement (http://localhost:4200/vendor.js:71159:76)
    at Overlay.create (http://localhost:4200/vendor.js:71152:44)
    at ToastrService._buildNotification (http://localhost:4200/vendor.js:71437:41)
    at ToastrService._preBuildNotification (http://localhost:4200/vendor.js:71410:21)
    at ToastrService.show (http://localhost:4200/vendor.js:71312:21)
    at http://localhost:4200/testmanagement-testManagement-module.js:135373:42
    at SafeSubscriber._next (http://localhost:4200/main.js:16704:48)
    at SafeSubscriber.__tryOrUnsub (http://localhost:4200/vendor.js:86042:16)
    at SafeSubscriber.next (http://localhost:4200/vendor.js:85981:22)
    at Subscriber._next (http://localhost:4200/vendor.js:85931:26)
    at Subscriber.next (http://localhost:4200/vendor.js:85908:18)
    at MapSubscriber._next (http://localhost:4200/vendor.js:90473:26)
    at MapSubscriber.next (http://localhost:4200/vendor.js:85908:18)
    at FilterSubscriber._next (http://localhost:4200/vendor.js:89986:30)
    at FilterSubscriber.next (http://localhost:4200/vendor.js:85908:18)
    at MergeMapSubscriber.notifyNext (http://localhost:4200/vendor.js:90709:26)
    at SimpleInnerSubscriber._next (http://localhost:4200/vendor.js:86296:21)
    at SimpleInnerSubscriber.next (http://localhost:4200/vendor.js:85908:18)
    at XMLHttpRequest.onLoad (http://localhost:4200/vendor.js:13256:30)
    at XMLHttpRequest.sentryWrapped (http://localhost:4200/assets/js/sentryConfigRec.js:369:23)
    at ZoneDelegate.invokeTask (http://localhost:4200/polyfills.js:521:35)
    at Object.onInvokeTask (http://localhost:4200/vendor.js:41584:33)
    at ZoneDelegate.invokeTask (http://localhost:4200/polyfills.js:520:40)
    at Zone.runTask (http://localhost:4200/polyfills.js:289:51)
    at ZoneTask.invokeTask [as invoke] (http://localhost:4200/polyfills.js:602:38)
    at invokeTask (http://localhost:4200/polyfills.js:1743:18)
    at XMLHttpRequest.globalZoneAwareCallback (http://localhost:4200/polyfills.js:1780:25)

Is there any way i can add more than 1 class to the container of all toastrs?