Response not successful: Received status code 500

Hi, in our website we have some issue: https://sneharhymes.art/ Fatal error : Uncaught Error: Typed property GraphQL\Executor\ExecutionResult::$extensions must not be accessed before initialization in /home/sneharhymes/public_html/wp-content/plugins/wp-graphql/vendor/webonyx/graphql-php/src/Executor/ExecutionResult.php:180 Stack trace: #0 /home/sneharhymes/public_html/wp-content/plugins/wp-graphql/vendor/webonyx/graphql-php/src/Executor/ExecutionResult.php(140): GraphQL\Executor\ExecutionResult->toArray() #1 [internal function]: GraphQL\Executor\ExecutionResult->jsonSerialize() #2 /home/sneharhymes/public_html/wp-includes/functions.php(4378): json_encode(Object(GraphQL\Executor\ExecutionResult), 0, 512) #3 /home/sneharhymes/public_html/wp-includes/functions.php(4541): wp_json_encode(Object(GraphQL\Executor\ExecutionResult), 0) #4 /home/sneharhymes/public_html/wp-content/plugins/wp-graphql/src/Router.php(543): wp_send_json(Object(GraphQL\Executor\ExecutionResult)) #5 /home/sneharhymes/public_html/wp-content/plugins/wp-graphql/src/Router.php(264): WPGraphQL\Router::process_http_request() #6 /home/sneharhymes/public_html/wp-includes/class-wp-hook.php(324): WPGraphQL\Router::resolve_http_request(Object(WP)) #7 /home/sneharhymes/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #8 /home/sneharhymes/public_html/wp-includes/plugin.php(565): WP_Hook->do_action(Array) #9 /home/sneharhymes/public_html/wp-includes/class-wp.php(418): do_action_ref_array(‘parse_request’, Array) #10 /home/sneharhymes/public_html/wp-includes/class-wp.php(818): WP->parse_request(”) #11 /home/sneharhymes/public_html/wp-includes/functions.php(1342): WP->main(”) #12 /home/sneharhymes/public_html/wp-blog-header.php(16): wp() #13 /home/sneharhymes/public_html/index.php(17): require(‘/home/sneharhym…’) #14 {main} thrown in /home/sneharhymes/public_html/wp-content/plugins/wp-graphql/vendor/webonyx/graphql-php/src/Executor/ExecutionResult.php on line 180 during creating new post from front-end.