Fatal error: Uncaught Error: Class "GraphQL\Validator\Rules\ValidationRule" not found in /usr/home/thecybulski/domains/thecybulski.usermd.net/public_html/vendor/webonyx/graphql-php/src/Validator/Rules/NoUndefinedVariables.php:18
Stack trace:
#0 {main}
  thrown in /usr/home/thecybulski/domains/thecybulski.usermd.net/public_html/vendor/webonyx/graphql-php/src/Validator/Rules/NoUndefinedVariables.php on line 18