Phone international error in submit form

I installed the module (international phone) on drupal 8.6 and I display it on my form.
when sending data it gives me an error message and blocks sending data.

The website encountered an unexpected error. Please try again later.
Error: Class ‘libphonenumberPhoneNumberUtil’ not found in Drupalphone_internationalHelpersValidatingService->isValidNumber() (line 24 of modules/phone_international/src/Helpers/ValidatingService.php).
Drupalphone_internationalHelpersValidatingService->isValidNumber(‘+212670998765’) (Line: 74)
Drupalphone_internationalPluginFieldFieldWidgetPhoneInternationalDefaultWidget->phoneValidate(Array, Object, Array)
call_user_func_array(Array, Array) (Line: 282)
DrupalCoreFormFormValidator->doValidateForm(Array, Object) (Line: 238)
DrupalCoreFormFormValidator->doValidateForm(Array, Object) (Line: 238)
DrupalCoreFormFormValidator->doValidateForm(Array, Object) (Line: 238)
DrupalCoreFormFormValidator->doValidateForm(Array, Object) (Line: 238)
DrupalCoreFormFormValidator->doValidateForm(Array, Object, ‘node_candidat_edit_form’) (Line: 118)
DrupalCoreFormFormValidator->validateForm(‘node_candidat_edit_form’, Array, Object) (Line: 575)
DrupalCoreFormFormBuilder->processForm(‘node_candidat_edit_form’, Array, Object) (Line: 318)
DrupalCoreFormFormBuilder->buildForm(‘node_candidat_edit_form’, Object) (Line: 93)
DrupalCoreControllerFormController->getContentResult(Object, Object)
call_user_func_array(Array, Array) (Line: 123)
DrupalCoreEventSubscriberEarlyRenderingControllerWrapperSubscriber->DrupalCoreEventSubscriber{closure}() (Line: 582)
DrupalCoreRenderRenderer->executeInRenderContext(Object, Object) (Line: 124)
DrupalCoreEventSubscriberEarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array) (Line: 97)
DrupalCoreEventSubscriberEarlyRenderingControllerWrapperSubscriber->DrupalCoreEventSubscriber{closure}() (Line: 151)
SymfonyComponentHttpKernelHttpKernel->handleRaw(Object, 1) (Line: 68)
SymfonyComponentHttpKernelHttpKernel->handle(Object, 1, 1) (Line: 57)
DrupalCoreStackMiddlewareSession->handle(Object, 1, 1) (Line: 47)
DrupalCoreStackMiddlewareKernelPreHandle->handle(Object, 1, 1) (Line: 99)
Drupalpage_cacheStackMiddlewarePageCache->pass(Object, 1, 1) (Line: 78)
Drupalpage_cacheStackMiddlewarePageCache->handle(Object, 1, 1) (Line: 47)
DrupalCoreStackMiddlewareReverseProxyMiddleware->handle(Object, 1, 1) (Line: 52)
DrupalCoreStackMiddlewareNegotiationMiddleware->handle(Object, 1, 1) (Line: 23)
StackStackedHttpKernel->handle(Object, 1, 1) (Line: 693)
DrupalCoreDrupalKernel->handle(Object) (Line: 19)


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Author Of this post: Lusifer
Title Of post: Phone international error in submit form
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