fix very fatal issue

src/ws/streams.js

@@ -37,12 +37,14 @@ const recvUpdate = async (channel, data) => {
 
 const sendInitial = async (id) => {
   const c = connections[id]
+  if (c.streamid !== null) {
     const stream = await crud['streams'].getById(c.streamid)
     c.connection.send(JSON.stringify({
       event: 'streams:read',
       data: stream,
     }))
   }
+}
 
 module.exports = {
   subscribe,