Hello I tried to deposit myself in the server console but it didn't work. I found the reson of this problem is data file is empty. I have to unload plugin and manually input players id and their coin amount, then deposit command works. The database version seems won't add new player data automatically.

Failed to call hook 'CommandDeposit' on plugin 'Economics v4.0.0' (KeyNotFoundException: The given key was not present in the dictionary.)
  at System.Collections.Generic.Dictionary`2[TKey,TValue].get_Item (TKey key) [0x0001e] in <fb001e01371b4adca20013e0ac763896>:0
  at Oxide.Plugins.Economics.SetBalance (System.String playerId, System.Double amount) [0x000c4] in <b74ccfcfcab64407b02ab8e7fd8fd223>:0
  at Oxide.Plugins.Economics.Deposit (System.String playerId, System.Double amount) [0x00037] in <b74ccfcfcab64407b02ab8e7fd8fd223>:0
  at Oxide.Plugins.Economics.CommandDeposit (Oxide.Core.Libraries.Covalence.IPlayer player, System.String command, System.String[] args) [0x002f7] in <b74ccfcfcab64407b02ab8e7fd8fd223>:0
  at Oxide.Plugins.Economics.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00466] in <b74ccfcfcab64407b02ab8e7fd8fd223>:0
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <b6af59acae274e5a94fb209dfc179b8f>:0
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <0d3ec4223e1545f9b3666f4f73517a10>:0
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <0d3ec4223e1545f9b3666f4f73517a10>:0​

Thanks for the report, I'll take a look when able.

Posted a new version for testing: https://umod.org/plugins/Economics.cs?version=4.0.0&branch=database

Thanks！