Slow function

Hello,

Please take a look at the stack trace below:

[30-Aug-2021 14:18:14] WARNING: [pool www] child 113509, script '/app/web/index.php' (request: "GET /index.php") executing too slow (66.240398 sec), logging
[30-Aug-2021 14:18:14] NOTICE: child 113509 stopped for tracing
[30-Aug-2021 14:18:14] NOTICE: about to trace 113509

[30-Aug-2021 14:18:14]  [pool www] pid 113509
script_filename = /app/web/index.php
[0x00007fce318143e0] getimagesize() /app/web/wp-content/plugins/schema-and-structured-data-for-wp/admin_section/common-function.php:1956
[0x00007fce318142d0] saswp_get_attachment_details() /app/web/wp-content/plugins/schema-and-structured-data-for-wp/output/service.php:5168
[0x00007fce318140c0] saswp_get_fetaure_image() /app/web/wp-content/plugins/schema-and-structured-data-for-wp/output/output.php:2238
[0x00007fce31813c40] saswp_schema_output() /app/web/wp-content/plugins/schema-and-structured-data-for-wp/output/function.php:265
[0x00007fce318138d0] saswp_get_all_schema_markup_output() /app/web/wp-content/plugins/schema-and-structured-data-for-wp/output/function.php:128
[0x00007fce31813810] saswp_schema_markup_output() /app/web/wp-includes/class-wp-hook.php:303
[0x00007fce31813730] apply_filters() /app/web/wp-includes/class-wp-hook.php:327
[0x00007fce318136c0] do_action() /app/web/wp-includes/plugin.php:470
[0x00007fce318135e0] do_action() /app/web/wp-includes/general-template.php:3015
[0x00007fce31813590] wp_head() /app/web/wp-content/themes/astra/header.php:26
[0x00007fce31813530] [INCLUDE_OR_EVAL]() /app/web/wp-includes/template.php:770
[0x00007fce318133d0] load_template() /app/web/wp-includes/template.php:716
[0x00007fce318132e0] locate_template() /app/web/wp-includes/general-template.php:48
[0x00007fce31813230] get_header() /app/web/wp-content/themes/astra/single.php:15
[0x00007fce318131c0] [INCLUDE_OR_EVAL]() /app/web/wp-includes/template-loader.php:106
[0x00007fce31813100] [INCLUDE_OR_EVAL]() /app/web/wp-blog-header.php:19
[0x00007fce31813070] [INCLUDE_OR_EVAL]() /app/web/index.php:17
[30-Aug-2021 14:18:14] NOTICE: finished trace of 113509

getimagesize() – this function is running very slow and it’s causing 504 timeouts on the website.