Bad Gateway after upgrading from AEM 6.5.5 to 6.5.21
Hi, I've recently upgraded my AEM instance on dev environment from 6.5.5 to 6.5.21 and after I've restarted the instance, it's responded with bad gateway 502 on the instance link itself and /system/console/bundles. I have tried checking if there are any invalid indexes and all of them are valid when i checked. Any suggestions on what steps should I take next to mitigate this issue?