Error: this.editor.create is not a function

[psrikar045]

core.js:6210 ERROR Error: Uncaught (in promise): TypeError: this.editor.create is not a function
TypeError: this.editor.create is not a function
at CKEditorComponent._callee2$ (ckeditor-ckeditor5-angular.js:254:50)
at tryCatch (ckeditor-ckeditor5-angular.js:2:1)
at Generator. (ckeditor-ckeditor5-angular.js:2:1)
at Generator.next (ckeditor-ckeditor5-angular.js:2:1)
at tslib.es6.js:76:1
at new ZoneAwarePromise (zone.js:913:33)
at __awaiter (tslib.es6.js:72:1)
at ckeditor-ckeditor5-angular.js:252:65
at ZoneDelegate.invoke (zone.js:386:30)
at Zone.run (zone.js:143:47)
at resolvePromise (zone.js:832:39)
at resolvePromise (zone.js:784:21)
at zone.js:894:21
at ZoneDelegate.invokeTask (zone.js:421:35)
at Object.onInvokeTask (core.js:28578:33)
at ZoneDelegate.invokeTask (zone.js:420:40)
at Zone.runTask (zone.js:188:51)
at drainMicroTaskQueue (zone.js:601:39)

html:
<ckeditor [editor]="Editor" [config]="config" [(ngModel)]="htmlData">
ts:
import custombuild from '../../../assets/lib/core/build/ckeditor'

public Editor = custombuild;
public htmlData = '

Data from html

heading 1'
public config ={
toolbar: {
items: [
'exportPDF', 'exportWord', '|',
'findAndReplace', 'selectAll', '|',
'heading', '|',
'bold', 'italic', 'strikethrough', 'underline', 'code', 'subscript', 'superscript', 'removeFormat', '|',
'bulletedList', 'numberedList', 'todoList', '|',
'outdent', 'indent', '|',
'undo', 'redo',
'-',
'fontSize', 'fontFamily', 'fontColor', 'fontBackgroundColor', 'highlight', '|',
'alignment', '|',
'link', 'insertImage', 'blockQuote', 'insertTable', 'mediaEmbed', 'codeBlock', 'htmlEmbed', '|',
'specialCharacters', 'horizontalLine', 'pageBreak', '|',
'textPartLanguage', '|',
'sourceEditing'
],
shouldNotGroupWhenFull: true
},
list: {
properties: {
styles: true,
startIndex: true,
reversed: true
}
},
heading: {
options: [
{ model: 'paragraph', title: 'Paragraph', class: 'ck-heading_paragraph' },
{ model: 'heading1', view: 'h1', title: 'Heading 1', class: 'ck-heading_heading1' },
{ model: 'heading2', view: 'h2', title: 'Heading 2', class: 'ck-heading_heading2' },
{ model: 'heading3', view: 'h3', title: 'Heading 3', class: 'ck-heading_heading3' },
{ model: 'heading4', view: 'h4', title: 'Heading 4', class: 'ck-heading_heading4' },
{ model: 'heading5', view: 'h5', title: 'Heading 5', class: 'ck-heading_heading5' },
{ model: 'heading6', view: 'h6', title: 'Heading 6', class: 'ck-heading_heading6' }
]
},
placeholder: '',
fontFamily: {
options: [
'default',
'Arial, Helvetica, sans-serif',
'Courier New, Courier, monospace',
'Georgia, serif',
'Lucida Sans Unicode, Lucida Grande, sans-serif',
'Tahoma, Geneva, sans-serif',
'Times New Roman, Times, serif',
'Trebuchet MS, Helvetica, sans-serif',
'Verdana, Geneva, sans-serif'
],
supportAllValues: true
},
fontSize: {
options: [10, 12, 14, 'default', 18, 20, 22],
supportAllValues: true
},
htmlSupport: {
allow: [
{
name: /.*/,
attributes: true,
classes: true,
styles: true
}
]
},
htmlEmbed: {
showPreviews: true
},
link: {
decorators: {
addTargetToExternalLinks: true,
defaultProtocol: 'https://',
toggleDownloadable: {
mode: 'manual',
label: 'Downloadable',
attributes: {
download: 'file'
}
}
}
},
mention: {
feeds: [
{
marker: '@',
feed: [
'@apple', '@bears', '@brownie', '@Cake', '@Cake', '@candy', '@CANES', '@chocolate', '@cookie', '@cotton', '@cream',
'@cupcake', '@danish', '@donut', '@drAgée', '@fruitcake', '@GingerBread', '@Gummi', '@ice', '@Jelly-O',
'@liquorice', '@macaroon', '@Marzipan', '@Oat', '@pie', '@plum', '@pudding', '@sesame', '@snaps', '@soufflé',
'@sugar', '@sweet', '@Topping', '@wafer'
],
minimumCharacters: 1
}
]
},
removePlugins: [
'CKBox',
'CKFinder',
// 'EasyImage',
'RealTimeCollaborativeComments',
'RealTimeCollaborativeTrackChanges',
'RealTimeCollaborativeRevisionHistory',
'PresenceList',
'Comments',
'TrackChanges',
'TrackChangesData',
'RevisionHistory',
'Pagination',
'WProofreader',
'MathType'
]
}
version used:
"@ckeditor/ckeditor5-angular": "^4.0.0",

ts config:
{
"compileOnSave": false,
"compilerOptions": {
"baseUrl": "./",
"outDir": "./dist/out-tsc",
"sourceMap": true,
"declaration": false,
"downlevelIteration": true,
"experimentalDecorators": true,
"moduleResolution": "node",
"resolveJsonModule": true,
"emitDecoratorMetadata": true,
"importHelpers": true,
"skipLibCheck":true,
"typeRoots": [
"node_modules/@types"
],
"target": "es5",
"module": "es2020",
"lib": [
"es2018",
"dom"
],
"allowSyntheticDefaultImports": true
},
"angularCompilerOptions": {
"fullTemplateTypeCheck": true,
"strictInjectionParameters": true,
"ivy":false
}
}