laravel only 'sometimes' forbidden error 403 - php

Question

I am practicing laravel and already uploaded to production, then i have some problem and it happened just 'sometimes', when i move to move route (move to move menu / path) suddenly forbidden access 403 <<<< only sometimes, but if i clear browser my route(menu/path) worked again no problem and it happened again when left lapse of time
virtualhost :
<VirtualHost *:80>
# Index file and Document Root (where the public files are located)
DirectoryIndex index.php
DocumentRoot /var/www/html/tes/app/public
<Directory /var/www/html/tes/app/public>
Options +Indexes +Includes +FollowSymLinks +MultiViews +ExecCGI
AllowOverride All
Require all granted
</Directory>
# Custom log file locations
#LogLevel warn
#ErrorLog /var/log/apache2/error-tes.log
#CustomLog /var/log/apache2/access-tes.log combined
ErrorLog ${APACHE_LOG_DIR}/error.log
CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>
.htaccess
<IfModule mod_rewrite.c>
<IfModule mod_negotiation.c>
Options -MultiViews -Indexes
</IfModule>
RewriteEngine On
# Handle Authorization Header
RewriteCond %{HTTP:Authorization} .
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
# Redirect Trailing Slashes If Not A Folder...
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_URI} (.+)/$
RewriteRule ^ %1 [L,R=301]
# Handle Front Controller...
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^ index.php [L]
</IfModule>
my route
Route::get('/', 'PenggunaController#index');
Route::post('/submitlogin', 'PenggunaController#submitlogin');
Route::prefix('workorder')->group(function () {
Route::get('inprogress', 'WorkorderController#fetchinprogress');
});
Route::prefix('request')->group(function () {
Route::get('inprogress', 'MyreqController#index');
Route::get('/myreq/{id}/{flag}', 'MyreqController#flag');
Route::get('/emp', 'MyreqController#emp');
Route::get('history', 'MyreqController#history');
});
thank you for attention