fix issue with assigning task members

Author: ThomasKranitsas

src/services/ResourceService.js

@@ -232,7 +232,7 @@ async function init (currentUser, challengeId, resource, isCreated) {
 
   // Prevent from creating more than 1 submitter resources on tasks
   if (_.get(challenge, 'task.isTask', false) && isCreated && resource.roleId === config.SUBMITTER_RESOURCE_ROLE_ID) {
-    const existing = await getResources(currentUser, challengeId, config.SUBMITTER_RESOURCE_ROLE_ID, 1, 1)
+    const existing = await getResources(currentUser, challengeId, config.SUBMITTER_RESOURCE_ROLE_ID, null, null, 1, 1)
     if (_.find(existing.data, r => r.roleId === config.SUBMITTER_RESOURCE_ROLE_ID)) {
       throw new errors.ConflictError(`The Task is already assigned`)
     }