The event from onPaste has no clipboard information. When event.clipboardData is run it returns undefined regardless of the paste being a text or image.
<Editor
toolbarOnFocus
onPaste={(event) => this.Copy_Paste_Pictures_PO(event)}
toolbarClassName='toolbar-class-new'
editorClassName={"toolbar-editor-class"}
onEditorStateChange={this.onEditorStateChange_PO}
/>