diff --git a/api/controllers/console/app/annotation.py b/api/controllers/console/app/annotation.py
index 14fd4679a..2b48afd55 100644
--- a/api/controllers/console/app/annotation.py
+++ b/api/controllers/console/app/annotation.py
@@ -208,7 +208,7 @@ class AnnotationBatchImportApi(Resource):
         if len(request.files) > 1:
             raise TooManyFilesError()
         # check file type
-        if not file.filename or not file.filename.endswith(".csv"):
+        if not file.filename or not file.filename.lower().endswith(".csv"):
             raise ValueError("Invalid file type. Only CSV files are allowed")
         return AppAnnotationService.batch_import_app_annotations(app_id, file)
 
diff --git a/api/controllers/console/datasets/datasets_segments.py b/api/controllers/console/datasets/datasets_segments.py
index bc37907a3..48142dbe7 100644
--- a/api/controllers/console/datasets/datasets_segments.py
+++ b/api/controllers/console/datasets/datasets_segments.py
@@ -374,7 +374,7 @@ class DatasetDocumentSegmentBatchImportApi(Resource):
         if len(request.files) > 1:
             raise TooManyFilesError()
         # check file type
-        if not file.filename or not file.filename.endswith(".csv"):
+        if not file.filename or not file.filename.lower().endswith(".csv"):
             raise ValueError("Invalid file type. Only CSV files are allowed")
 
         try:
diff --git a/api/core/ops/ops_trace_manager.py b/api/core/ops/ops_trace_manager.py
index e0dfe0c31..a98904102 100644
--- a/api/core/ops/ops_trace_manager.py
+++ b/api/core/ops/ops_trace_manager.py
@@ -251,7 +251,7 @@ class OpsTraceManager:
             provider_config_map[tracing_provider]["trace_instance"],
             provider_config_map[tracing_provider]["config_class"],
         )
-        decrypt_trace_config_key = str(decrypt_trace_config)
+        decrypt_trace_config_key = json.dumps(decrypt_trace_config, sort_keys=True)
         tracing_instance = cls.ops_trace_instances_cache.get(decrypt_trace_config_key)
         if tracing_instance is None:
             # create new tracing_instance and update the cache if it absent
diff --git a/api/core/rag/index_processor/processor/qa_index_processor.py b/api/core/rag/index_processor/processor/qa_index_processor.py
index e778b2cec..75f315369 100644
--- a/api/core/rag/index_processor/processor/qa_index_processor.py
+++ b/api/core/rag/index_processor/processor/qa_index_processor.py
@@ -104,7 +104,7 @@ class QAIndexProcessor(BaseIndexProcessor):
 
     def format_by_template(self, file: FileStorage, **kwargs) -> list[Document]:
         # check file type
-        if not file.filename or not file.filename.endswith(".csv"):
+        if not file.filename or not file.filename.lower().endswith(".csv"):
             raise ValueError("Invalid file type. Only CSV files are allowed")
 
         try: