TypeError: method_exists()

[blackcatt]

When working with binance futures sometime I have trouble in workerman.log like this:

TypeError: method_exists(): Argument #1 ($object_or_class) must be of type object|string, null given in .../vendor/linwj/
Stack trace:
#0 /var/www/.../vendor/linwj/binance/src/Request.php(144): method_exists()
#1 /var/www/.../vendor/linwj/binance/src/Api/Futures/Trade.php(52): Lin\Binance\Request->exec()
#2 /var/www/....php(770): Lin\Binance\Api\Futures\Trade->postOrder()
...
#4 /var/www/....php(385): account_update()
#5 /var/www/.../vendor/workerman/workerman/Connection/TcpConnection.php(646): {closure}()
#6 /var/www/.../vendor/workerman/workerman/Events/Select.php(311): Workerman\Connection\TcpConnection->baseRead()
#7 /var/www/.../vendor/workerman/workerman/Worker.php(1629): Workerman\Events\Select->loop()
#8 /var/www/.../vendor/workerman/workerman/Worker.php(1423): Workerman\Worker::forkOneWorkerForLinux()
#9 /var/www/.../vendor/workerman/workerman/Worker.php(1397): Workerman\Worker::forkWorkersForLinux()
#10 /var/www/.../vendor/workerman/workerman/Worker.php(560): Workerman\Worker::forkWorkers()
#11 /var/www/....php(1305): Workerman\Worker::runAll()
#12 {main}
exit with status 64000

So, the Worker restarted, and this is not good and incomprehensible.
My postOrder() code is wrapped to try/catch but anyway error happened (very rare, but it exists)
Also I saw this problem when calling methods putListenKey() deleteOrder() deleteBatchOrders() getTickerPrice()
Even if problem in network connection there should be a solution to catch this error

Please help to solve this issue.

[zhouaini528]

I have already solved it, you can try again.