Magento - order details are not displayed in the admin panel

Question

We have an ecommerce magento store. Right now, we are experiencing a weird problem, which i am unable to understand and debug.

For some of the orders, no details ar

Answer 1

Try also this, it worked for me (from https://magentary.com/kb/php-syntax-error-after-supee-7405-unexpected/):

Problem description

After SUPEE-7405 patch Sales Order Management screen in Magento Backend is blank or the following error is reported in PHP error log:

PHP Parse error: syntax error, unexpected '[' in app/code/core/Mage/Adminhtml/Helper/Sales.php on line 124

Cause

SUPEE-7405 is prepared with PHP 5.4 in mind, older PHP versions are incompatible with new language constructions used.

Solution

Change line 124 in app/code/core/Mage/Adminhtml/Helper/Sales.php from $links = []; to $links = array();:

--- app/code/core/Mage/Adminhtml/Helper/Sales.php
+++ app/code/core/Mage/Adminhtml/Helper/Sales.php

@@ -121,7 +121,7 @@
     public function escapeHtmlWithLinks($data, $allowedTags = null)
     {
         if (!empty($data) && is_array($allowedTags) && in_array('a', $allowedTags)) {
-            $links = [];
+            $links = array();
             $i = 1;
             $data = str_replace('%', '%%', $data);