fix server error with unicode in template

awx/main/fields.py

@@ -9,7 +9,7 @@ import six
 import urllib
 
 from jinja2 import Environment, StrictUndefined
-from jinja2.exceptions import UndefinedError
+from jinja2.exceptions import UndefinedError, TemplateSyntaxError
 
 # Django
 from django.core import exceptions as django_exceptions
@@ -810,6 +810,12 @@ class CredentialTypeInjectorField(JSONSchemaField):
                         code='invalid',
                         params={'value': value},
                     )
+                except TemplateSyntaxError as e:
+                    raise django_exceptions.ValidationError(
+                        _('Syntax error rendering template for %s inside of %s (%s)') % (key, type_, e),
+                        code='invalid',
+                        params={'value': value},
+                    )
 
 
 class AskForField(models.BooleanField):