Printing fail.

[divali]

Unable to print. Drivers downloaded. Printing done message but no print coming.

System: Ubuntu 20.04.2 LTS. 64 bit. Intel® Core™2 Quad CPU Q9400 @ 2.66GHz × 4

Package: cups.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: cups 2.3.1-9ubuntu1.1
ProcVersionSignature: Ubuntu 5.4.0-67.75-generic 5.4.94
Uname: Linux 5.4.0-67-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.16
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Mon Mar 22 11:43:58 2021
InstallationDate: Installed on 2020-03-06 (381 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
Lpstat: device for Epson-Stylus-SX235: usb://EPSON/Stylus%20SX235?serial=4E3839593131383625&interface=1
MachineType: Dell Inc. OptiPlex 780
Papersize: a4
PpdFiles: Error: command ['fgrep', '-H', '*NickName', '/etc/cups/ppd/Epson-Stylus-SX235.ppd'] failed with exit code 2: grep: /etc/cups/ppd/Epson-Stylus-SX235.ppd: Permission denied
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-67-generic root=UUID=8c55dbb0-4532-4346-a658-638dcf71b286 ro quiet splash vt.handoff=7
SourcePackage: cups
UpgradeStatus: Upgraded to focal on 2020-10-12 (161 days ago)
dmi.bios.date: 08/21/2012
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A14
dmi.board.name: 0200DY
dmi.board.vendor: Dell Inc.
dmi.board.version: A01
dmi.chassis.type: 3
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA14:bd08/21/2012:svnDellInc.:pnOptiPlex780:pvr:rvnDellInc.:rn0200DY:rvrA01:cvnDellInc.:ct3:cvr:
dmi.product.name: OptiPlex 780
dmi.sys.vendor: Dell Inc.