HTTP ERROR 500 when trying to access an URL

hi, i got big trouble with my site which is newly integrated with CyberPanel. My website ran in Nginx before and then I moved to CP. When I try to access an old post URL, I got 500 HTTP Error. And I press F5 to reload the page, this post became normal, the URL is still able to access successfully. I don’t know which type of this error but it affects seriously to my SEO performance.

Please check web server logs.

Type your comment> @usmannasir said:

Please check web server logs.

These are my last 50 lines:
“2021-05-24 02:51:33.330527 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 868352 bytes) in /home/theatre-daunou.com/public_html/wp-includes/widgets/class-wp-widget-recent-posts.php on line 120
2021-05-24 02:51:33.330562 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP Stack trace:
2021-05-24 02:51:33.330567 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 1. {main}() /home/theatre-daunou.com/public_html/index.php:0
2021-05-24 02:51:33.330570 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 2. require() /home/theatre-daunou.com/public_html/index.php:17
2021-05-24 02:51:33.330574 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 3. require_once() /home/theatre-daunou.com/public_html/wp-blog-header.php:19
2021-05-24 02:51:33.330577 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 4. include() /home/theatre-daunou.com/public_html/wp-includes/template-loader.php:106
2021-05-24 02:51:33.330580 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 5. generate_construct_sidebars() /home/theatre-daunou.com/public_html/wp-content/themes/generatepress/single.php:52
2021-05-24 02:51:33.330583 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 6. get_sidebar() /home/theatre-daunou.com/public_html/wp-content/themes/generatepress/inc/structure/sidebars.php:34
2021-05-24 02:51:33.330586 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 7. locate_template() /home/theatre-daunou.com/public_html/wp-includes/general-template.php:136
2021-05-24 02:51:33.330589 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 8. load_template() /home/theatre-daunou.com/public_html/wp-includes/template.php:676
2021-05-24 02:51:33.330592 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 9. require_once() /home/theatre-daunou.com/public_html/wp-includes/template.php:730
2021-05-24 02:51:33.330595 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 10. dynamic_sidebar() /home/theatre-daunou.com/public_html/wp-content/themes/generatepress/sidebar.php:22
2021-05-24 02:51:33.330612 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 11. WP_Widget_Recent_Posts->display_callback() /home/theatre-daunou.com/public_html/wp-includes/widgets.php:823
2021-05-24 02:51:33.330615 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 12. WP_Widget_Recent_Posts->widget() /home/theatre-daunou.com/public_html/wp-includes/class-wp-widget.php:380
2021-05-24 02:51:33.331051 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 65536 bytes) in /home/theatre-daunou.com/public_html/wp-includes/functions.php on line 3397
2021-05-24 02:51:33.331060 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP Stack trace:
2021-05-24 02:51:33.331064 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 1. {main}() /home/theatre-daunou.com/public_html/index.php:0
2021-05-24 02:51:33.331067 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 2. require() /home/theatre-daunou.com/public_html/index.php:17
2021-05-24 02:51:33.331070 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 3. require_once() /home/theatre-daunou.com/public_html/wp-blog-header.php:19
2021-05-24 02:51:33.331073 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 4. include() /home/theatre-daunou.com/public_html/wp-includes/template-loader.php:106
2021-05-24 02:51:33.331076 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 5. generate_construct_sidebars() /home/theatre-daunou.com/public_html/wp-content/themes/generatepress/single.php:52
2021-05-24 02:51:33.331079 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 6. get_sidebar() /home/theatre-daunou.com/public_html/wp-content/themes/generatepress/inc/structure/sidebars.php:34
2021-05-24 02:51:33.331081 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 7. locate_template() /home/theatre-daunou.com/public_html/wp-includes/general-template.php:136
2021-05-24 02:51:33.331084 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 8. load_template() /home/theatre-daunou.com/public_html/wp-includes/template.php:676
2021-05-24 02:51:33.331087 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 9. require_once() /home/theatre-daunou.com/public_html/wp-includes/template.php:730
2021-05-24 02:51:33.331090 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 10. dynamic_sidebar() /home/theatre-daunou.com/public_html/wp-content/themes/generatepress/sidebar.php:22
2021-05-24 02:51:33.331093 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 11. WP_Widget_Recent_Posts->display_callback() /home/theatre-daunou.com/public_html/wp-includes/widgets.php:823
2021-05-24 02:51:33.331095 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 12. WP_Widget_Recent_Posts->widget() /home/theatre-daunou.com/public_html/wp-includes/class-wp-widget.php:380
2021-05-24 02:51:33.331098 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 13. WP_Fatal_Error_Handler->handle() /home/theatre-daunou.com/public_html/wp-includes/class-wp-fatal-error-handler.php:0
2021-05-24 02:51:33.331101 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 14. WP_Fatal_Error_Handler->display_error_template() /home/theatre-daunou.com/public_html/wp-includes/class-wp-fatal-error-handler.php:57
2021-05-24 02:51:33.331104 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 15. WP_Fatal_Error_Handler->display_default_error_template() /home/theatre-daunou.com/public_html/wp-includes/class-wp-fatal-error-handler.php:152
2021-05-24 02:51:33.331107 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 16. wp_die() /home/theatre-daunou.com/public_html/wp-includes/class-wp-fatal-error-handler.php:233
2021-05-24 02:51:33.331561 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 856064 bytes) in Unknown on line 0
2021-05-24 02:51:33.331570 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP Stack trace:
2021-05-24 02:51:33.331573 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 1. {main}() /home/theatre-daunou.com/public_html/index.php:0
2021-05-24 02:51:33.331576 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 2. require() /home/theatre-daunou.com/public_html/index.php:17
2021-05-24 02:51:33.331579 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 3. require_once() /home/theatre-daunou.com/public_html/wp-blog-header.php:19
2021-05-24 02:51:33.331582 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 4. include() /home/theatre-daunou.com/public_html/wp-includes/template-loader.php:106
2021-05-24 02:51:33.331585 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 5. generate_construct_sidebars() /home/theatre-daunou.com/public_html/wp-content/themes/generatepress/single.php:52
2021-05-24 02:51:33.331588 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 6. get_sidebar() /home/theatre-daunou.com/public_html/wp-content/themes/generatepress/inc/structure/sidebars.php:34
2021-05-24 02:51:33.331591 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 7. locate_template() /home/theatre-daunou.com/public_html/wp-includes/general-template.php:136
2021-05-24 02:51:33.331594 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 8. load_template() /home/theatre-daunou.com/public_html/wp-includes/template.php:676
2021-05-24 02:51:33.331597 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 9. require_once() /home/theatre-daunou.com/public_html/wp-includes/template.php:730
2021-05-24 02:51:33.331600 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 10. dynamic_sidebar() /home/theatre-daunou.com/public_html/wp-content/themes/generatepress/sidebar.php:22
2021-05-24 02:51:33.331602 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 11. WP_Widget_Recent_Posts->display_callback() /home/theatre-daunou.com/public_html/wp-includes/widgets.php:823
2021-05-24 02:51:33.331605 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 12. WP_Widget_Recent_Posts->widget() /home/theatre-daunou.com/public_html/wp-includes/class-wp-widget.php:380
2021-05-24 02:51:33.331608 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 13. WP_Fatal_Error_Handler->handle() /home/theatre-daunou.com/public_html/wp-includes/class-wp-fatal-error-handler.php:0
2021-05-24 02:51:33.331611 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 14. WP_Fatal_Error_Handler->display_error_template() /home/theatre-daunou.com/public_html/wp-includes/class-wp-fatal-error-handler.php:57
2021-05-24 02:51:33.331614 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 15. WP_Fatal_Error_Handler->display_default_error_template() /home/theatre-daunou.com/public_html/wp-includes/class-wp-fatal-error-handler.php:152
2021-05-24 02:51:33.331617 [NOTICE] [1457] [157.55.39.29:5888:HTTP2-1#theatre-daunou.com] [STDERR] PHP 16. wp_die() /home/theatre-daunou.com/public_html/wp-includes/class-wp-fatal-error-handler.php:233”

The error I see is

Fatal error: Allowed memory size of 134217728 bytes exhausted

You need to increase memory limit for the php version you are using

Type your comment> @usmannasir said:

The error I see is

Fatal error: Allowed memory size of 134217728 bytes exhausted

You need to increase memory limit for the php version you are using

I tried to increase php limit to 256M (which was 128M before) but this error still happen.
Is this error related to .htaccess config?

You need to click “Restart PHP” or do killall lsphp from cli.

Type your comment> @usmannasir said:

You need to click “Restart PHP” or do killall lsphp from cli.

i restarted PHP as well after changing the config. but it didn’t work

Then its time for you to look into our partner section and go for a managed service. Because these are the exact steps to follow.