"JSON - Exception in server tick loop" is an error message that can occur on a Minecraft server when issues arise with .json files. These are ops.json, usercache.json, and whitelist.json specifically. Removing these files and restarting the server to recreate them will resolve the issue. For any help or questions, start a conversation with support here.
Note: This error will appear in the console:
java.lang.NullPointerException: Exception in server tick loop at net.minecraft.server.v1_7_R3.JsonList.load(JsonList.java:171)
1. Log in to the BisectHosting Starbase panel.
2. Stop the server.
3. Go to the Files tab.
4. Select the ops.json, whitelist.json, and usercache.json files.
5. Choose Delete.
6. Start the server.