12:47 [Error] Failed to call hook 'OnPlayerAttack' on plugin 'Fishing v1.4.8' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.Fishing.ProcessSpearFish (BasePlayer attacker, HitInfo hitInfo) [0x0000a] in <3bebd3fa8f6046029cc6b037c7d8006c>:0
  at Oxide.Plugins.Fishing.OnPlayerAttack (BasePlayer attacker, HitInfo hitInfo) [0x00083] in <3bebd3fa8f6046029cc6b037c7d8006c>:0
  at Oxide.Plugins.Fishing.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x004a7] in <3bebd3fa8f6046029cc6b037c7d8006c>:0
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <9affce1cd15c4ec183941adef8db1722>:0
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <4452f821def6406d834e4149849fe7ea>:0
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <4452f821def6406d834e4149849fe7ea>:0

any more info on this? or just something you caught in the server console/logs?

If I shoot a zombie walking in the water, I get this error

I just uploaded a new version. try it out, make sure it fixes your issues :) 

Apparently, is it solved, thanks :)