Thanks Basma Shahadat for reporting this issue, as far as I can tell, it's not related to the jenkins infrastructure project, but seems to be a plugin issue so I move your ticket here in order to bring more visibility on it
Here are are the steps to duplicate reproduce the issue: * Upgrade Script Security plugin 1.62 * Restart Jenkins (Jenkins version 2.194) * Jenkins will not come up, please find attached screen shot
* Jenkins will not come up, please find attached screen shot. Jenkins will fail to load all the plugins. * If we revert back the version of Script Security plugin, it does not work either.