EO Child process exited unexpectedly.
We face this error HtmlToPdf.ConvertUrl method
Please suggest how to avoid this error.

error.stack
at EO.Internal.otdb.ascr(Exception nnq, Boolean nnr)
at EO.Internal.otdb.ascq(osyy nnn)
at EO.Internal.otdb.ascb(Boolean& nmk, otde[] nml, String nmm, String nmn)
at EO.Internal.otdb.myyb(otde[] nmh, String nmi, String nmj)
at EO.Internal.otdc.myyb(String nrl, String nrm)
at EO.Internal.xsyb.lrpd()
at EO.Internal.xsyb.iaot.bdgb()
at EO.Internal.osyo.lfcl(Action lul)
at EO.Internal.xsyb.ntza(WindowsIdentity fg)
at EO.WebEngine.Engine.Start(WindowsIdentity user)
at EO.WebEngine.Engine.Start()
at EO.Internal.ceqh.jogi()
at EO.Internal.ceqi.jogi(ceqh& bqr)
at EO.Internal.ceqj.jogi(xsxw bqv, ceqh& bqw)
at EO.Internal.ceqm.rvbp()
at EO.Internal.ceqm..ctor(xsxw bra, HtmlToPdfOptions brb)
at EO.Pdf.HtmlToPdfSession.petv(HtmlToPdfOptions yq)
at EO.Pdf.HtmlToPdfSession..ctor(HtmlToPdfOptions yo, HtmlToPdfSession yp)
at EO.Pdf.HtmlToPdfSession.Create(HtmlToPdfOptions options)
at EO.Pdf.HtmlToPdf.ucjc.werx()
at EO.Internal.ceqj.uuii[a](osxn`1 bqz)
at EO.Pdf.HtmlToPdf.ConvertUrl(String url, PdfDocument doc, HtmlToPdfOptions options)