PHP 8.1 - Getting error method_exists(): Argument #1 ($object_or_class) must be of type object|string, null given

[leexin]

method_exists(): Argument #1 ($object_or_class) must be of type object|string, null given
#0 /var/www/vendor/linwj/huobi/src/Request.php(167): method_exists()
#1 /var/www/vendor/linwj/huobi/src/Api/Spot/Order.php(21): Lin\Huobi\Request->exec()

When submitting order to Huobi calling $client->order()->postPlace()
Using PHP8.1

Probable fix to linwj/huobi/src/Request.php and linwj/binance/src/Request.php (might affect other exchanges Request.php too)
if(method_exists($e->getResponse(),'getBody')){
to be changed to
if( !empty($e->getResponse()) && method_exists($e->getResponse(),'getBody')){

[zhouaini528]

Sorry I didn't find such a problem in PHP 8.1

[leexin]

@zhouaini528 same issue as mentioned in OKEX here zhouaini528/okex-php#5

[zhouaini528]

@zhouaini528 same issue as mentioned in OKEX here zhouaini528/okex-php#5

Thanks for the discovery, I have solved the problem.