Failed to call hook 'OnServerInitialized' 
on plugin 'Sirens v2.1.4' (ArgumentException: Could not cast or convert 
from System.String to NetworkableId.)
  at 
Newtonsoft.Json.Utilities.ConvertUtils.EnsureTypeAssignable 
(System.Object value, System.Type initialType, System.Type targetType) 
[0x00062] in <271c58b7a8684db5a2c92be17a81f252>:0

  at 
Newtonsoft.Json.Utilities.ConvertUtils.ConvertOrCast (System.Object 
initialValue, System.Globalization.CultureInfo culture, System.Type 
targetType) [0x00031

This plugin is tring to save the NetworkableIDs to saves which can't be done. Ive submitted a patch but we will have to wait till it gets pushed. Otherwise dm me @Whispers88#00007 on discord if you want the file sooner.

Hi there,
thanks for the report and the patience.

Somehow forgot about this issue, but it is fixed now.

Best regards
ZockiRR