403 Forbidden when post request with unEscape html content in laravel - php

Question

403 error when this type data save.
this problem is only Namecheap server
when save then result in this
**but without unEscape HTML content data save successfully **
data seve with unEscape HTML content.
.................. /admin/page/update route point code below
public function update(Request $request)
{
$input = $request->all();
$content = $request->except(['page_code', 'status', '_token']);
$pageCode = $input['page_code'];
$page = Page::where('code', $pageCode)->first();
if ($page->type == 'dynamic') {
$content = [
'section_id' => $input['section_id'] ?? null,
'meta_keywords' => $input['meta_keywords'],
'meta_description' => $input['meta_description'],
'content' => Purifier::clean(htmlspecialchars_decode($input['content'])),
];
$data = [
'title' => $input['title'],
'data' => json_encode($content),
'status' => $input['status'],
];
} else {
$oldData = json_decode($page->data, true);
foreach ($content as $key => $value) {
if (is_file($value)) {
$oldValue = Arr::get($oldData, $key);
$content[$key] = self::imageUploadTrait($value, $oldValue);
} elseif ($key == 'content') {
$content[$key] = Purifier::clean(htmlspecialchars_decode($value));
}
}
$content = array_merge($oldData, $content);
$data = [
'status' => $input['status'] ?? true,
'data' => json_encode($content)
];
}
$page->update($data);
if ($page->type == 'dynamic') Cache::pull('pages');
notify()->success($page->title . ' ' . __(' Updated
Successfully'));
return redirect()->back();
}