From ba877956b94b1663ce6d38168eea48da8dd6bfca Mon Sep 17 00:00:00 2001
From: Toke Stuart Jepsen <tokejepsen@gmail.com>
Date: Wed, 5 Jul 2023 09:17:53 +0100
Subject: [PATCH 1/3] Fix collecting arnold prefix when none

---
 openpype/hosts/maya/api/lib_renderproducts.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/openpype/hosts/maya/api/lib_renderproducts.py b/openpype/hosts/maya/api/lib_renderproducts.py
index a6bcd003a5..4f52372f06 100644
--- a/openpype/hosts/maya/api/lib_renderproducts.py
+++ b/openpype/hosts/maya/api/lib_renderproducts.py
@@ -528,6 +528,9 @@ class RenderProductsArnold(ARenderProducts):
     def get_renderer_prefix(self):
 
         prefix = super(RenderProductsArnold, self).get_renderer_prefix()
+        if prefix is None:
+            return ""
+
         merge_aovs = self._get_attr("defaultArnoldDriver.mergeAOVs")
         if not merge_aovs and "<renderpass>" not in prefix.lower():
             # When Merge AOVs is disabled and <renderpass> token not present

From 974d70869300015c9044a1a4b043b50c247ed670 Mon Sep 17 00:00:00 2001
From: Toke Stuart Jepsen <tokejepsen@gmail.com>
Date: Wed, 5 Jul 2023 12:41:26 +0100
Subject: [PATCH 2/3] Revert "Fix collecting arnold prefix when none"

This reverts commit ba877956b94b1663ce6d38168eea48da8dd6bfca.
---
 openpype/hosts/maya/api/lib_renderproducts.py | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/openpype/hosts/maya/api/lib_renderproducts.py b/openpype/hosts/maya/api/lib_renderproducts.py
index 4f52372f06..a6bcd003a5 100644
--- a/openpype/hosts/maya/api/lib_renderproducts.py
+++ b/openpype/hosts/maya/api/lib_renderproducts.py
@@ -528,9 +528,6 @@ class RenderProductsArnold(ARenderProducts):
     def get_renderer_prefix(self):
 
         prefix = super(RenderProductsArnold, self).get_renderer_prefix()
-        if prefix is None:
-            return ""
-
         merge_aovs = self._get_attr("defaultArnoldDriver.mergeAOVs")
         if not merge_aovs and "<renderpass>" not in prefix.lower():
             # When Merge AOVs is disabled and <renderpass> token not present

From 558cd4fe6818cb708c46d2b3f02f6a4125e8b355 Mon Sep 17 00:00:00 2001
From: Toke Stuart Jepsen <tokejepsen@gmail.com>
Date: Wed, 5 Jul 2023 12:42:16 +0100
Subject: [PATCH 3/3] Use BigRoy soluiton

---
 openpype/hosts/maya/api/lib_renderproducts.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/openpype/hosts/maya/api/lib_renderproducts.py b/openpype/hosts/maya/api/lib_renderproducts.py
index a6bcd003a5..7bfb53d500 100644
--- a/openpype/hosts/maya/api/lib_renderproducts.py
+++ b/openpype/hosts/maya/api/lib_renderproducts.py
@@ -274,12 +274,14 @@ class ARenderProducts:
                 "Unsupported renderer {}".format(self.renderer)
             )
 
+        # Note: When this attribute is never set (e.g. on maya launch) then
+        # this can return None even though it is a string attribute
         prefix = self._get_attr(prefix_attr)
 
         if not prefix:
             # Fall back to scene name by default
-            log.debug("Image prefix not set, using <Scene>")
-            file_prefix = "<Scene>"
+            log.warning("Image prefix not set, using <Scene>")
+            prefix = "<Scene>"
 
         return prefix