Laravel page load problem connection reset - PHP

I use laravel 5.2 Create a simple RestFul API, My client has a shared domain , So I can't run shell command , So I went through cpanel With the public_html Uploaded in the adjacent directory laravel, I am for laravel Create a subdomain and place the public directory in the directory and point the subdomain to pulic Catalog . In some cases, everything is normal , Sometimes it doesn't work properly , This page shows me an error

“ Connection reset ”

Please anyone who can help me solve this problem ？

I have also tried this method in Google browser , But the problem remains .
Sometimes home page url Work well , Sometimes this error appears , I try to blade from layout php Delete comments from the file to try .

I also tried to update the storage permissions to 777

Reference plan

This is a .htaccess Problems with documents , If you encounter this problem , It can be found in htaccess To add the following

php_flag opcache.enable Off

It's like a charm to me

thank you

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