Catch error when regex is invalid

frigate/data_processing/common/license_plate/mixin.py

@@ -1500,6 +1500,7 @@ class LicensePlateProcessingMixin:
 
         # Determine subLabel based on known plates, use regex matching
         # Default to the detected plate, use label name if there's a match
+        try:
             sub_label = next(
                 (
                     label
@@ -1512,6 +1513,11 @@ class LicensePlateProcessingMixin:
                 ),
                 None,
             )
+        except re.error:
+            logger.error(
+                f"{camera}: Invalid regex in known plates configuration: {self.lpr_config.known_plates}"
+            )
+            sub_label = None
 
         # If it's a known plate, publish to sub_label
         if sub_label is not None: