fixes

packages/components/packages/PollingBackend/PollingBackend.js

-const sse = require('pubsweet-sse')
+// const sse = require('pubsweet-sse')
 
 const PollingBackend = app => {
   const { Fragment, Collection, User } = app.locals.models
@@ -41,12 +41,11 @@ const PollingBackend = app => {
     Object.keys(patch).forEach(key => {
       data[key] = fragment[key]
     })
-
-    // console.log('fragment', fragment)
-
-    sse.send({
+    // console.log('data', data)
+    const update = data
+    app.locals.sse.send({
       action: 'fragment:patch',
-      data: { fragment: { id: fragment.id }, data },
+      data: { fragment: { id: fragment.id }, update },
     })
   }
 

packages/components/packages/PollingBackend/package-lock.json

 {
   "name": "pubsweet-component-polling-backend",
   "version": "0.0.1",
-  "lockfileVersion": 1
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "pubsweet-sse": {
+      "version": "0.1.4",
+      "resolved":
+        "https://registry.npmjs.org/pubsweet-sse/-/pubsweet-sse-0.1.4.tgz",
+      "integrity":
+        "sha512-zQlcHSgVpKvsPSoNHgoh7+8DPIPQ6kqMRRhs3e8d/icHrJAhoz0aQdovB8VK5XZfjUkoHYidCjDT2LFueDvwVA=="
+    }
+  }
 }