diff --git a/sfm/server.py b/sfm/server.py
index 6990c12..aaad0b6 100644
--- a/sfm/server.py
+++ b/sfm/server.py
@@ -898,10 +898,13 @@ def device_event_blastware_file(
     except HTTPException:
         raise
     except ProtocolError as exc:
+        log.error("blastware_file: protocol error: %s", exc, exc_info=True)
         raise HTTPException(status_code=502, detail=f"Protocol error: {exc}") from exc
     except OSError as exc:
+        log.error("blastware_file: connection error: %s", exc, exc_info=True)
         raise HTTPException(status_code=502, detail=f"Connection error: {exc}") from exc
     except Exception as exc:
+        log.error("blastware_file: unexpected error: %s", exc, exc_info=True)
         raise HTTPException(status_code=500, detail=f"Device error: {exc}") from exc
 
     if ev is None: