diff --git a/awx/ui_next/src/components/FormField/FormSubmitError.jsx b/awx/ui_next/src/components/FormField/FormSubmitError.jsx
index 6dd5db1c32..65621cf581 100644
--- a/awx/ui_next/src/components/FormField/FormSubmitError.jsx
+++ b/awx/ui_next/src/components/FormField/FormSubmitError.jsx
@@ -15,6 +15,8 @@ function FormSubmitError({ error }) {
       setErrors(errorMessages);
       if (errorMessages.__all__) {
         setErrorMessage(errorMessages.__all__);
+      } else if (errorMessages.detail) {
+        setErrorMessage(errorMessages.detail);
       } else {
         setErrorMessage(null);
       }
diff --git a/awx/ui_next/src/components/ResourceAccessList/ResourceAccessList.jsx b/awx/ui_next/src/components/ResourceAccessList/ResourceAccessList.jsx
index e321a14b2b..6ba012bc9b 100644
--- a/awx/ui_next/src/components/ResourceAccessList/ResourceAccessList.jsx
+++ b/awx/ui_next/src/components/ResourceAccessList/ResourceAccessList.jsx
@@ -203,7 +203,7 @@ class ResourceAccessList extends React.Component {
                         onClick={this.handleAddOpen}
                       />,
                     ]
-                  : null
+                  : []
               }
             />
           )}
diff --git a/awx/ui_next/src/screens/Project/ProjectAdd/ProjectAdd.jsx b/awx/ui_next/src/screens/Project/ProjectAdd/ProjectAdd.jsx
index 300627247d..f8a1950490 100644
--- a/awx/ui_next/src/screens/Project/ProjectAdd/ProjectAdd.jsx
+++ b/awx/ui_next/src/screens/Project/ProjectAdd/ProjectAdd.jsx
@@ -13,6 +13,13 @@ function ProjectAdd() {
     if (values.scm_type === 'manual') {
       values.scm_type = '';
     }
+    if (!values.credential) {
+      // Depending on the permissions of the user submitting the form,
+      // the API might throw an unexpected error if our creation request
+      // has a zero-length string as its credential field. As a work-around,
+      // normalize falsey credential fields by deleting them.
+      delete values.credential;
+    }
     setFormSubmitError(null);
     try {
       const {
diff --git a/awx/ui_next/src/screens/Project/ProjectEdit/ProjectEdit.jsx b/awx/ui_next/src/screens/Project/ProjectEdit/ProjectEdit.jsx
index bde5500cb6..94fcaf3edc 100644
--- a/awx/ui_next/src/screens/Project/ProjectEdit/ProjectEdit.jsx
+++ b/awx/ui_next/src/screens/Project/ProjectEdit/ProjectEdit.jsx
@@ -13,6 +13,13 @@ function ProjectEdit({ project }) {
     if (values.scm_type === 'manual') {
       values.scm_type = '';
     }
+    if (!values.credential) {
+      // Depending on the permissions of the user submitting the form,
+      // the API might throw an unexpected error if our creation request
+      // has a zero-length string as its credential field. As a work-around,
+      // normalize falsey credential fields by deleting them.
+      delete values.credential;
+    }
     try {
       const {
         data: { id },