Uncaught TypeError: Cannot read properties of undefined (reading 'value') and Undefined index: pred_hostname

Describe the bug

It happens when you edit privileges for a user account on a specific database. Also, a few more notices were given, which can be seen on the second video.

To Reproduce

Steps to reproduce the behavior:

1. Edit privileges for a user account on a specific database
2. Click on 'Go'
3. See error

Expected behavior

No error should be given.

Screenshots

https://user-images.githubusercontent.com/25424343/169705655-0496b2f3-f5b2-47e6-8679-6bbae98ad971.mp4

https://user-images.githubusercontent.com/25424343/169706208-2329b175-c965-4edb-bf44-34d0dc4a746d.mp4

Server configuration

• Operating system: Linux
• Web server: nginx/1.14.2
• Database version: 8.0.18 - MySQL Community Server - GPL
• PHP version: 7.4.29
• phpMyAdmin version: 5.2.2-dev, 6.0.0-dev

Client configuration

• Browser: Chrome/101.0.4951.67
• Operating system: Windows 10

Additional context

tracekit.js?v=5.3.0-dev:342 Uncaught TypeError: Cannot read properties of undefined (reading 'value')
    at HTMLFormElement.handleEvent (privileges.js:444:39)
    at HTMLFormElement.newFunc (error_report.js:247:33)
    at HTMLFormElement.dispatch (jquery.min.js?v=5.3.0-dev:2:43064)
    at HTMLFormElement.v.handle (jquery.min.js?v=5.3.0-dev:2:41048)

Notice in ./libraries/classes/Server/Privileges.php#2566

 Undefined index: pred_hostname
Backtrace

PrivilegesController.php#220: PhpMyAdmin\Server\Privileges->addUser(
NULL,
string '',
string '',
string '*6E1D683C148B73830421F1D93529DC187CF45107',
boolean false,
)
Routing.php#189: PhpMyAdmin\Controllers\Server\PrivilegesController->__invoke(
,
array,
)
index.php#44: PhpMyAdmin\Routing::callControllerForRoute(
,
string '/server/privileges',
,
,
)

Notice in ./libraries/classes/Server/Privileges.php#2566

 Undefined index: pred_hostname
Backtrace

PrivilegesController.php#220: PhpMyAdmin\Server\Privileges->addUser(
NULL,
string '',
string '',
string '*6E1D683C148B73830421F1D93529DC187CF45107',
boolean false,
)
Routing.php#189: PhpMyAdmin\Controllers\Server\PrivilegesController->__invoke(
,
array,
)
index.php#44: PhpMyAdmin\Routing::callControllerForRoute(
,
string '/server/privileges',
,
,
)
Notice in ./libraries/classes/Server/Privileges.php#3545

 Undefined index: pred_password
Backtrace

Privileges.php#2612: PhpMyAdmin\Server\Privileges->getSqlQueriesForDisplayAndAddUser(
string '',
string '',
string '*6E1D683C148B73830421F1D93529DC187CF45107',
)
PrivilegesController.php#220: PhpMyAdmin\Server\Privileges->addUser(
NULL,
string '',
string '',
string '*6E1D683C148B73830421F1D93529DC187CF45107',
boolean false,
)
Routing.php#189: PhpMyAdmin\Controllers\Server\PrivilegesController->__invoke(
,
array,
)
index.php#44: PhpMyAdmin\Routing::callControllerForRoute(
,
string '/server/privileges',
,
,
)
Notice in ./libraries/classes/Server/Privileges.php#3548

 Undefined index: pred_password
Backtrace

Privileges.php#2612: PhpMyAdmin\Server\Privileges->getSqlQueriesForDisplayAndAddUser(
string '',
string '',
string '*6E1D683C148B73830421F1D93529DC187CF45107',
)
PrivilegesController.php#220: PhpMyAdmin\Server\Privileges->addUser(
NULL,
string '',
string '',
string '*6E1D683C148B73830421F1D93529DC187CF45107',
boolean false,
)
Routing.php#189: PhpMyAdmin\Controllers\Server\PrivilegesController->__invoke(
,
array,
)
index.php#44: PhpMyAdmin\Routing::callControllerForRoute(
,
string '/server/privileges',
,
,
)
Notice in ./libraries/classes/Server/Privileges.php#3559

 Undefined index: pma_pw
Backtrace

Privileges.php#2612: PhpMyAdmin\Server\Privileges->getSqlQueriesForDisplayAndAddUser(
string '',
string '',
string '*6E1D683C148B73830421F1D93529DC187CF45107',
)
PrivilegesController.php#220: PhpMyAdmin\Server\Privileges->addUser(
NULL,
string '',
string '',
string '*6E1D683C148B73830421F1D93529DC187CF45107',
boolean false,
)
Routing.php#189: PhpMyAdmin\Controllers\Server\PrivilegesController->__invoke(
,
array,
)
index.php#44: PhpMyAdmin\Routing::callControllerForRoute(
,
string '/server/privileges',
,
,
)
Notice in ./libraries/classes/Server/Privileges.php#2660

 Undefined index: username
Backtrace

PrivilegesController.php#220: PhpMyAdmin\Server\Privileges->addUser(
NULL,
string '',
string '',
string '*6E1D683C148B73830421F1D93529DC187CF45107',
boolean false,
)
Routing.php#189: PhpMyAdmin\Controllers\Server\PrivilegesController->__invoke(
,
array,
)
index.php#44: PhpMyAdmin\Routing::callControllerForRoute(
,
string '/server/privileges',
,
,
)

Reproduce the privilege-edit flow described in the issue, then inspect privileges.js at the reported handler and libraries/classes/Server/Privileges.php at the reported lines. Trace the request through PrivilegesController.php and compare the submitted fields with the accesses producing the notices. Done means the flow completes without the TypeError or undefined-index notices.