catch encoding error in plugin

zmq_notify.rb

@@ -243,6 +243,12 @@ class ZMQNotify
 		tags    = tags.split( ',' )
 		return WEECHAT_RC_OK unless ( ignored & tags ).empty?
 
+		message = if message.respond_to?(:encode)
+					  message.encode('UTF-8', invalid: :replace, undef: :replace)
+				  else
+					  message
+				  end
+
 		notify = {
 			:highlight => ! highlight.to_i.zero?,
 			:type      => data[ :type ],
@@ -258,7 +264,11 @@ class ZMQNotify
 		#
 		self.print_info "Message notification: %p" % [ notify ] if DEBUG
 		if self.use_json.true?
+		  begin
 		    self.zmq.send( notify.to_json )
+		  rescue Encoding::UndefinedConversionError => ex
+			self.print_info "Failed encoding msg to JSON [#{notify.inspect}]"
+		  end
 		else
 		  self.zmq.send( notify.to_yaml )
 		end