Symphony crashes when sending multiple requests at the same time. This is fine?

Question

symfony

I send multiple requests (two) to one controller:

GET my-super-api/app_dev.php/api/product_categories

GET my-super-api/app_dev.php/api/product_categories/26

One of the requests randomly returns a 500 code with the following error:

{"code":500,"message":"Warning: rename(F:\\OpenServer\\domains\\ergil-api\\app\\cache\\dev\/doctrine\/orm\/Proxies\\__CG__FiveToFiveergilDomainBundleEntityImage.php.56027f42c7b448.13194206,F:\\OpenServer\\domains\\ergil-api\\app\\cache\\dev\/doctrine\/orm\/Proxies\\__CG__FiveToFiveergilDomainBundleEntityImage.php): "}

If I need, for example, news and product categories - everything is ok, requests go simultaneously, without errors.
In production mode, this is not observed.
UPD. In more detail:

CRITICAL - Uncaught PHP Exception Symfony\Component\Debug\Exception\ContextErrorException: "Warning: rename(F:\OpenServer\domains\ergil-api\app\cache\dev/doctrine/orm/Proxies\__CG__FiveToFiveergilDomainBundleEntityHTMLData.php.56027937e4e284.81440187,F:\OpenServer\domains\ergil-api\app\cache\dev/doctrine/orm/Proxies\__CG__FiveToFiveergilDomainBundleEntityHTMLData.php): " at F:\OpenServer\domains\ergil-api\vendor\doctrine\common\lib\Doctrine\Common\Proxy\ProxyGenerator.php line 305 
Context: {"exception":"Object(Symfony\\Component\\Debug\\Exception\\ContextErrorException)"}

Answer 1

When sending two concurrent requests, a Warning level error is thrown when renaming a file in the cache, that is, one of the processes does it before the other. On Virgo, the Warning level is critical by default.
On prod, there is no error, because the cache is not generated every request, as on dev. Either the error is still present, but the Warning level is not critical - look at the log.