diff --git a/build.sh b/build.sh
index f7fc013..8d3c5f9 100755
--- a/build.sh
+++ b/build.sh
@@ -4,7 +4,7 @@ cpu=$(arch) #cpu架构
 sys=$(cat /etc/issue)
 sys=${sys%% *} #操作系统
 mainverstr="s/ver_1/4/g"  #版本控制
-minver="20"
+minver="21"
 minverstr="s/ver_2/"
 verstr3="s/ver_3/"
 ver3=10
diff --git a/hgdriver/hgdev/hg_scanner_239.cpp b/hgdriver/hgdev/hg_scanner_239.cpp
index 0d29df3..7f2f273 100644
--- a/hgdriver/hgdev/hg_scanner_239.cpp
+++ b/hgdriver/hgdev/hg_scanner_239.cpp
@@ -1155,11 +1155,7 @@ int hg_scanner_239::read_one_image_from_usb(SANE_Image_Statu statu)
 			}
 			else
 			{
-				char	msg[128];
-				sprintf(msg, "Read image data from USB err: %s\n", hg_scanner_err_name(ret));
-				LOG_INFO(LOG_LEVEL_DEBUG_INFO, msg);
-				notify_ui_working_status(msg);
-				notify_ui_working_status(STATU_DESC_SCANNER_ERR_TIMEOUT, SANE_EVENT_ERROR);
+				VLOG_MINI_1(LOG_LEVEL_DEBUG_INFO, "Read image data from USB err: %s\n", hg_scanner_err_name(ret));
 			}
 		}
 	}
diff --git a/hgsane/sane_hg_mdw.cpp b/hgsane/sane_hg_mdw.cpp
index 2d8544d..30adb9d 100644
--- a/hgsane/sane_hg_mdw.cpp
+++ b/hgsane/sane_hg_mdw.cpp
@@ -1981,6 +1981,8 @@ extern "C" {	// avoid compiler exporting name in C++ style !!!
 	}
 	void inner_sane_cancel(SANE_Handle handle)
 	{
+		LOG_INFO(LOG_LEVEL_ALL, "sane_cancel\n");
+
 		hg_sane_middleware::instance()->stop(handle);
 	}
 	SANE_Status inner_sane_set_io_mode(SANE_Handle handle, SANE_Bool non_blocking)