Uncaught TypeError in official-facebook-pixel

Error Details
=============
An error of type E_ERROR was caused in line 42 of the file /homepages/42/d916086630/htdocs/clickandbuilds/K12PrepAcademy/wp-content/plugins/official-facebook-pixel/vendor/facebook/php-business-sdk/src/FacebookAds/Object/ServerSide/Normalizer.php. Error message: Uncaught TypeError: strlen(): Argument #1 ($string) must be of type string, array given in /homepages/42/d916086630/htdocs/clickandbuilds/K12PrepAcademy/wp-content/plugins/official-facebook-pixel/vendor/facebook/php-business-sdk/src/FacebookAds/Object/ServerSide/Normalizer.php:42
Stack trace:
#0 /homepages/42/d916086630/htdocs/clickandbuilds/K12PrepAcademy/wp-content/plugins/official-facebook-pixel/vendor/facebook/php-business-sdk/src/FacebookAds/Object/ServerSide/Normalizer.php(42): strlen(Array)
#1 /homepages/42/d916086630/htdocs/clickandbuilds/K12PrepAcademy/wp-content/plugins/official-facebook-pixel/vendor/facebook/php-business-sdk/src/FacebookAds/Object/ServerSide/UserData.php(914): FacebookAds\Object\ServerSide\Normalizer::normalize(’em’, Array)
#2 /homepages/42/d916086630/htdocs/clickandbuilds/K12PrepAcademy/wp-content/plugins/official-facebook-pixel/vendor/facebook/php-business-sdk/src/FacebookAds/Object/ServerSide/UserData.php(863): FacebookAds\Object\ServerSide\UserData->normalizeHashDedup(’em’, Array)
#3 /homepages/42/d916086630/htdocs/clickandbuilds/K12PrepAcademy/wp-content/plugins/official-facebook-pixel/vendor/facebook/php-business-sdk/src/FacebookAds/Object/ServerSide/Event.php(373): FacebookAds\Object\ServerSide\UserData->normalize()
#4 /homepages/42/d916086630/htdocs/clickandbuilds/K12PrepAcademy/wp-content/plugins/official-facebook-pixel/vendor/facebook/php-business-sdk/src/FacebookAds/Object/ServerSide/EventRequest.php(302): FacebookAds\Object\ServerSide\Event->normalize()
#5 /homepages/42/d916086630/htdocs/clickandbuilds/K12PrepAcademy/wp-content/plugins/official-facebook-pixel/vendor/facebook/php-business-sdk/src/FacebookAds/Object/ServerSide/EventRequest.php(240): FacebookAds\Object\ServerSide\EventRequest->normalize()
#6 /homepages/42/d916086630/htdocs/clickandbuilds/K12PrepAcademy/wp-content/plugins/official-facebook-pixel/vendor/facebook/php-business-sdk/src/FacebookAds/Object/ServerSide/EventRequest.php(235): FacebookAds\Object\ServerSide\EventRequest->defaultExecute()
#7 /homepages/42/d916086630/htdocs/clickandbuilds/K12PrepAcademy/wp-content/plugins/official-facebook-pixel/core/FacebookServerSideEvent.php(108): FacebookAds\Object\ServerSide\EventRequest->execute()
#8 /homepages/42/d916086630/htdocs/clickandbuilds/K12PrepAcademy/wp-content/plugins/official-facebook-pixel/core/ServerEventAsyncTask.php(147): FacebookPixelPlugin\Core\FacebookServerSideEvent::send(Array)
#9 /homepages/42/d916086630/htdocs/clickandbuilds/K12PrepAcademy/wp-content/plugins/official-facebook-pixel/vendor/techcrunch/wp-async-task/wp-async-task.php(164): FacebookPixelPlugin\Core\ServerEventAsyncTask->run_action()
#10 /homepages/42/d916086630/htdocs/clickandbuilds/K12PrepAcademy/wp-includes/class-wp-hook.php(307): WP_Async_Task->handle_postback(”)
#11 /homepages/42/d916086630/htdocs/clickandbuilds/K12PrepAcademy/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters(”, Array)
#12 /homepages/42/d916086630/htdocs/clickandbuilds/K12PrepAcademy/wp-includes/plugin.php(476): WP_Hook->do_action(Array)
#13 /homepages/42/d916086630/htdocs/clickandbuilds/K12PrepAcademy/wp-admin/admin-post.php(61): do_action(‘admin_post_nopr…’)
#14 {main}
thrown

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