Rendering code refactor

folkugat_web/fragments/sessio.py

@@ -1,5 +1,3 @@
-from typing import Optional
-
 from fastapi import Request
 from fastapi.responses import HTMLResponse
 from folkugat_web.model.pagines import Pages

folkugat_web/fragments/sessions.py

@@ -1,5 +1,3 @@
-from typing import Optional
-
 from fastapi import Request
 from fastapi.responses import HTMLResponse
 from folkugat_web.config import calendari as config

folkugat_web/fragments/temes.py

@@ -1,6 +1,6 @@
 from fastapi import Request
 from folkugat_web.model import temes as model
-from folkugat_web.model.lilypond import RenderError
+from folkugat_web.model.lilypond.processing import RenderError
 from folkugat_web.model.pagines import Pages
 from folkugat_web.services import sessions as sessions_service
 from folkugat_web.services.temes import links as links_service