[11:49:45] [Forge Version Check/INFO] [ne.mi.fm.VersionChecker/]: [brandonscore] Starting version check at https://version-check.covers1624.net/check/?mod=BrandonsCore&mc=1.16.5 [11:49:46] [Forge Version Check/WARN] [ne.mi.fm.VersionChecker/]: Failed to process update information java.io.FileNotFoundException: https://version-check.covers1624.net/check/?mod=BrandonsCore&mc=1.16.5 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_311] {} at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_311] {} at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_311] {} at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[?:1.8.0_311] {} at sun.net.www.protocol.http.HttpURLConnection$10.run(Unknown Source) ~[?:1.8.0_311] {} at sun.net.www.protocol.http.HttpURLConnection$10.run(Unknown Source) ~[?:1.8.0_311] {} at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_311] {} at sun.net.www.protocol.http.HttpURLConnection.getChainedException(Unknown Source) ~[?:1.8.0_311] {} at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source) ~[?:1.8.0_311] {} at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) ~[?:1.8.0_311] {} at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source) ~[?:1.8.0_311] {} at net.minecraftforge.fml.VersionChecker$1.openUrlStream(VersionChecker.java:171) ~[forge:?] {re:classloading} at net.minecraftforge.fml.VersionChecker$1.process(VersionChecker.java:187) ~[forge:?] {re:classloading} at java.lang.Iterable.forEach(Unknown Source) [?:1.8.0_311] {} at net.minecraftforge.fml.VersionChecker$1.run(VersionChecker.java:139) [forge:?] {re:classloading} Caused by: java.io.FileNotFoundException: https://version-check.covers1624.net/check/?mod=BrandonsCore&mc=1.16.5 at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source) ~[?:1.8.0_311] {} at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) ~[?:1.8.0_311] {} at java.net.HttpURLConnection.getResponseCode(Unknown Source) ~[?:1.8.0_311] {} at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source) ~[?:1.8.0_311] {} at net.minecraftforge.fml.VersionChecker$1.openUrlStream(VersionChecker.java:155) ~[forge:?] {re:classloading} ... 3 more

This is non-critical and has been put on the back burner for now.

This is related to the update checker which is not yet implemented.