[NFR]: Return value of Phalcon\Db\Adapter\AbstractAdapter::getSqlVariables() must be of the type array, null returned"

[alian001]

[27-Aug-2021 19:35:11] WARNING: [pool www] child 24604 said into stderr: "NOTICE: PHP message: PHP Fatal error: Return value of Phalcon\Db\Adapter\AbstractAdapter::getSqlVariables() must be of the type array, null returned in Unknown on line 0"
[27-Aug-2021 19:35:11] WARNING: [pool www] child 24604 said into stderr: "Unknown(0) : Fatal error - Return value of Phalcon\Db\Adapter\AbstractAdapter::getSqlVariables() must be of the type array, null returned"
[27-Aug-2021 19:35:14] WARNING: [pool www] child 24605 said into stderr: "NOTICE: PHP message: PHP Fatal error: Return value of Phalcon\Db\Adapter\AbstractAdapter::getSqlVariables() must be of the type array, null returned in Unknown on line 0"
[27-Aug-2021 19:35:14] WARNING: [pool www] child 24605 said into stderr: "Unknown(0) : Fatal error - Return value of Phalcon\Db\Adapter\AbstractAdapter::getSqlVariables() must be of the type array, null returned"
[27-Aug-2021 19:35:23] WARNING: [pool www] child 24607 said into stderr: "NOTICE: PHP message: PHP Fatal error: Return value of Phalcon\Db\Adapter\AbstractAdapter::getSqlVariables() must be of the type array, null returned in Unknown on line 0"
[27-Aug-2021 19:35:23] WARNING: [pool www] child 24607 said into stderr: "Unknown(0) : Fatal error - Return value of Phalcon\Db\Adapter\AbstractAdapter::getSqlVariables() must be of the type array, null returned"

the verison is cphalcon-4.1.2

my php verison is php7.4.22, osversion is ceonts7.6,when i run the php, has the error,

psr version is
php --ri psr
psr
Version => 1.0.1
Released => 2020-11-12
Authors => John Boehr jbboehr@gmail.com (lead)
PSR-3 Log Version => 1.0.0
PSR-6 Cache Version => 1.0.0
PSR-7 Http Message Version => 1.0.0
PSR-11 Container Version => 1.0.0
PSR-13 Link Version => 1.0.0
PSR-14 Event Dispatcher => 1.0.0
PSR-15 HTTP Handlers (Server Handler) => 1.0.0
PSR-15 HTTP Handlers (Middleware) => 1.0.0
PSR-16 Simple Cache Version => 1.0.0
PSR-17 HTTP Factories => 1.0.0
PSR-18 HTTP Client => 1.0.0

i do not know ,why is this error,
who can help me,

[Jeckerson]

Could you provide code example?

[ruibin]

I found this bug too! My php version is 7.4 and phalcon version is 4.1.2.

The reason is Phalcon\Db\Adapter\Pdo\Mysql extends Phalcon\Db\Adapter\AbstractAdapter and getSqlVariables() has no return type declare. But the parent method has array return type define.

class method rewriting must be the same return type as parent method.

[Jeckerson]

@alian001 How did you install Phalcon?

[niden]

Resolved in #15750

Thank you @alian001