diff --git a/server/component-xpub-review-backend/src/reviewBackend.js b/server/component-xpub-review-backend/src/reviewBackend.js
index 8b4110df00c3d7b5ced8616d1422ffc749f83ec9..1132bc19e477e44581e24425e75415f30cdfee8b 100644
--- a/server/component-xpub-review-backend/src/reviewBackend.js
+++ b/server/component-xpub-review-backend/src/reviewBackend.js
@@ -9,10 +9,10 @@ const { AuthorizationError } = require('@pubsweet/errors')
 
 const authBearer = passport.authenticate('bearer', { session: false })
 
-const { User, Fragment, Team, Collection } = require('@pubsweet/models')
-
 module.exports = app => {
   app.patch('/api/make-invitation', authBearer, async (req, res, next) => {
+    const { User, Fragment, Team, Collection } = require('@pubsweet/models')
+
     try {
       const version = await Fragment.find(req.body.versionId)
       const project = await Collection.find(req.body.projectId)
@@ -32,7 +32,6 @@ module.exports = app => {
       }
 
       const canViewVersion = await authsome.can(req.user, 'GET', version)
-
       const canPatchVersion = await authsome.can(
         req.user,
         'PATCH',
@@ -41,11 +40,9 @@ module.exports = app => {
 
       if (!canPatchVersion || !canViewVersion) throw new AuthorizationError()
       let versionUpdateData = req.body.reviewers
-
       if (canPatchVersion.filter) {
         versionUpdateData = canPatchVersion.filter(versionUpdateData)
       }
-
       await version.updateProperties({ reviewers: versionUpdateData })
       await version.save()
 
@@ -74,13 +71,11 @@ module.exports = app => {
       }
 
       const canViewProject = await authsome.can(req.user, 'GET', project)
-
       const canPatchProject = await authsome.can(
         req.user,
         'PATCH',
         currentAndUpdateProject,
       )
-
       if (!canPatchProject || !canViewProject) throw new AuthorizationError()
 
       await Team.query().upsertGraphAndFetch(
@@ -108,6 +103,8 @@ module.exports = app => {
 
   app.patch('/api/make-decision', authBearer, async (req, res, next) => {
     try {
+      const { User, Fragment, Collection } = require('@pubsweet/models')
+
       const version = await Fragment.find(req.body.versionId)
       const project = await Collection.find(req.body.projectId)
       const authors = await Promise.all(version.owners.map(id => User.find(id)))
@@ -121,7 +118,6 @@ module.exports = app => {
       }
 
       const canViewVersion = await authsome.can(req.user, 'GET', version)
-
       const canPatchVersion = await authsome.can(
         req.user,
         'PATCH',
@@ -130,17 +126,14 @@ module.exports = app => {
 
       if (!canPatchVersion || !canViewVersion) throw new AuthorizationError()
       let versionUpdateData = { decision: req.body.decision }
-
       if (canPatchVersion.filter) {
         versionUpdateData = canPatchVersion.filter(versionUpdateData)
       }
-
       await version.updateProperties(versionUpdateData)
 
       let nextVersionData
       let projectUpdateData = {}
       let message
-
       switch (version.decision.recommendation) {
         case 'accept':
           projectUpdateData.status = 'accepted'
@@ -166,7 +159,6 @@ module.exports = app => {
             'files',
             'notes',
           ])
-
           nextVersionData = {
             fragmentType: 'version',
             created: new Date(),
@@ -185,20 +177,16 @@ module.exports = app => {
 
       let nextVersion
       let canViewNextVersion
-
       if (nextVersionData) {
         const canCreateVersion = await authsome.can(req.user, 'POST', {
           path: '/collections/:collectionId/fragments',
           collection: project,
           fragment: nextVersionData,
         })
-
         if (!canCreateVersion) throw new AuthorizationError()
-
         if (canCreateVersion.filter) {
           nextVersionData = canCreateVersion.filter(nextVersionData)
         }
-
         nextVersion = new Fragment(nextVersionData)
 
         canViewNextVersion = await authsome.can(req.user, 'GET', nextVersion)
@@ -207,19 +195,15 @@ module.exports = app => {
       currentAndUpdate = { current: project, update: req.body }
 
       const canViewProject = await authsome.can(req.user, 'GET', project)
-
       const canPatchProject = await authsome.can(
         req.user,
         'PATCH',
         currentAndUpdate,
       )
-
       if (!canPatchProject || !canViewProject) throw new AuthorizationError()
-
       if (canPatchProject.filter) {
         projectUpdateData = canPatchProject.filter(projectUpdateData)
       }
-
       await project.updateProperties(projectUpdateData)
 
       await Promise.all([