Steps to reproduce the issue

1. Login to Joomla backend.
2. Update Notification appears
3. Click button
4. Component opens
5. Click button to update

Same happens when opening Joomla! Update component from menu.

Expected result

Update process to begin

Actual result

Broken page results to https://[domain name URL]/administrator/index.php
HTTP ERROR 500

System information (as much as possible)

Server Information
Processor Information
Total processors: 2
Intel(R) Xeon(R) CPU E5620 @ 2.40GHz
Speed
2400.084 MHz
Cache
12288 KB
Operating System
CENTOS 7.8 kvm [host] v90.0.14
Memory Information
[ 0.000000] Memory: 1904740k/2047856k available (7672k kernel code, 392k absent, 142724k reserved, 6049k data, 1876k init)
System Information
Linux host.alcoholjustice.org 3.10.0-957.27.2.el7.x86_64 #1 SMP Mon Jul 29 17:46:05 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Platform
PHP Built On Linux host.alcoholjustice.org 3.10.0-957.27.2.el7.x86_64 #1 SMP Mon Jul 29 17:46:05 UTC 2019 x86_64
Database Type mysql
Database Version 5.5.5-10.0.31-MariaDB
Database Collation utf8_general_ci
Database Connection Collation utf8mb4_general_ci
PHP Version 7.3.23
Web Server LiteSpeed
WebServer to PHP Interface litespeed
Joomla! Version Joomla! 3.9.20 Stable [ Amani ] 14-July-2020 15:00 GMT
Joomla! Platform Version Joomla Platform 13.1.0 Stable [ Curiosity ] 24-Apr-2013 00:00 GMT

Additional comments