Ads keep us online. Without them, we wouldn't exist. We don't have
paywalls or sell mods - we never will. But every month we have large bills
and running ads is our only way to cover them. Please consider unblocking us. Thank you from GameBanana <3
Its impossible to know what cause that since you didnt provide any additonal information (such as whether or not you use mods, whether or not you tried disabling mods ect.) which isnt really going to help anyone solve this. I would also recommend searching for help from Crobar Collectives (they are the people who made Black Mesa) official discord server too.