2021-03-16 05:08:03,539 [YDAWBH120][Thread:34][ERROR] DotNetNuke.UI.WebControls.DNNListEditControl - System.FormatException: Input string was not in a correct format.
   at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal)
   at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info)
   at System.String.System.IConvertible.ToInt32(IFormatProvider provider)
   at System.Convert.ToInt32(Object value)
   at DotNetNuke.UI.WebControls.DNNListEditControl.get_OldIntegerValue()
2021-03-16 11:11:02,649 [YDAWBH120][Thread:10][FATAL] DotNetNuke.Web.Common.Internal.DotNetNukeHttpApplication - System.Web.HttpException (0x80004005)
   at System.Web.Util.FileUtil.CheckSuspiciousPhysicalPath(String physicalPath)
   at System.Web.CachedPathData.ValidatePath(String physicalPath)
   at System.Web.HttpContext.ValidatePath()
   at System.Web.HttpApplication.PipelineStepManager.ValidateHelper(HttpContext context)
2021-03-16 22:16:38,383 [YDAWBH120][Thread:59][ERROR] DotNetNuke.UI.WebControls.DNNListEditControl - System.FormatException: Input string was not in a correct format.
   at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal)
   at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info)
   at System.String.System.IConvertible.ToInt32(IFormatProvider provider)
   at System.Convert.ToInt32(Object value)
   at DotNetNuke.UI.WebControls.DNNListEditControl.get_OldIntegerValue()
2021-03-16 22:30:14,555 [YDAWBH120][Thread:45][ERROR] DotNetNuke.UI.WebControls.DNNListEditControl - System.FormatException: Input string was not in a correct format.
   at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal)
   at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info)
   at System.String.System.IConvertible.ToInt32(IFormatProvider provider)
   at System.Convert.ToInt32(Object value)
   at DotNetNuke.UI.WebControls.DNNListEditControl.get_OldIntegerValue()
2021-03-16 23:34:02,782 [YDAWBH120][Thread:10][ERROR] DotNetNuke.Services.Exceptions.Exceptions - System.FormatException: Input string was not in a correct format.
   at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal)
   at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info)
   at DotNetNuke.UI.WebControls.CaptchaControl.GenerateImage(String encryptedText)
2021-03-16 23:53:55,516 [YDAWBH120][Thread:8][ERROR] DotNetNuke.UI.WebControls.CaptchaControl - System.ArgumentException: Font 'MS Sans Serif' cannot be found.
   at System.Drawing.FontFamily.CreateFontFamily(String name, FontCollection fontCollection)
   at System.Drawing.FontFamily..ctor(String name)
   at DotNetNuke.UI.WebControls.CaptchaControl.GetFont()
2021-03-16 23:53:55,532 [YDAWBH120][Thread:8][ERROR] DotNetNuke.UI.WebControls.CaptchaControl - System.ArgumentException: Font 'MS Sans Serif' cannot be found.
   at System.Drawing.FontFamily.CreateFontFamily(String name, FontCollection fontCollection)
   at System.Drawing.FontFamily..ctor(String name)
   at DotNetNuke.UI.WebControls.CaptchaControl.GetFont()