From ring-buffer to string with out ","

General
1

Hi all .
My Flow read data from serial port node , then sed it to ring-buffer node
then can see it like Arduino serial port terminal .
Here is part of my data :

,Append spreadsheet values...
,----------------------------
,05/05/2022 19:10:33
,
,{
,	"spreadsheetId": "1NO1FDWAwbXCryi9bSbD1h99oszagPmJ7g2S3pSWSTWI",
,	"tableRange": "NewSheet!A1:D79176",
,	"updates": {
,		"spreadsheetId": "1NO1FDWAwbXCryi9bSbD1h99oszagPmJ7g2S3pSWSTWI",
,		"updatedRange": "NewSheet!A79177:D79177",
,		"updatedRows": 1,
,		"updatedColumns": 4,
,		"updatedCells": 4
,	}
,}
,

but every line is start with , character.
How I can remove this character form all lines ?

regards.