Warning in ./db_export.php#91 urldecode() expects parameter 1 to be string, array given

[unioncos]

PhpMyadmin 4.8.4 throws the following error on every Export of a database using gzip to the var/lib/phpMyadmin/save folder

Warning in ./db_export.php#91
urldecode() expects parameter 1 to be string, array given

Backtrace

./db_export.php#91: urldecode(array)
./libraries/classes/Export.php#940: include_once(./db_export.php)
./export.php#549: PhpMyAdmin\Export::showPage(
string 'database_name',
string '',
string 'database',
)

and exits to a text only page - and a backup in the browser will produce the above output at the bottom reported as an error on the server

Describe the bug

My server is Centos 7 Server: 7.6.1810

Localhost via UNIX socket
Server type: MariaDB
Server connection: SSL is not being used Documentation
Server version: 10.2.19-MariaDB - MariaDB Server
Protocol version: 10
User: root@localhost
Server charset: UTF-8 Unicode (utf8)
Web server
Apache/2.4.37 (codeit) OpenSSL/1.1.1 mod_fcgid/2.3.9
Database client version: libmysql - mysqlnd 5.0.11-dev - 20120503 - $Id: 76b08b24596e12d4553bd41fc93cccd5bac2fe7a $
PHP extension: mysqliDocumentation curlDocumentation mbstringDocumentation
PHP version: 5.6.39
phpMyAdmin
Version information: 4.8.4 (up to date) latest code up to date

Server: Localhost via UNIX socket
Server type: MariaDB
Server connection: SSL is not being used Documentation
Server version: 10.2.19-MariaDB - MariaDB Server
Protocol version: 10
User: root@localhost
Server charset: UTF-8 Unicode (utf8)
Web server
Apache/2.4.37 (codeit) OpenSSL/1.1.1 mod_fcgid/2.3.9
Database client version: libmysql - mysqlnd 5.0.11-dev - 20120503 - $Id: 76b08b24596e12d4553bd41fc93cccd5bac2fe7a $
PHP extension: mysqliDocumentation curlDocumentation mbstringDocumentation
PHP version: 5.6.39
phpMyAdmin
Version information: 4.8.4 (up to date)

Web Server

BIND version | 9.9
Postfix version | 2.10.1
Mail injection command | /usr/lib/sendmail -t
Apache version | 2.4.37 (codeit)