Application crashes during scanning

Scanning starts and runs for a while, but then fails after varying periods, showing a "Failed to scan: error communicating with scanner" message. Xsane however, works fine.

Log file during failure attached.

ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: simple-scan 3.30.1.1-1
ProcVersionSignature: Ubuntu 4.18.0-13.14-generic 4.18.17
Uname: Linux 4.18.0-13-generic x86_64
ApportVersion: 2.20.10-0ubuntu13.1
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sun Dec 30 17:22:50 2018
InstallationDate: Installed on 2015-03-25 (1376 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
MachineType: Dell Inc. Latitude 3540
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-13-generic root=UUID=12d5fc26-67d7-4ef4-aee7-b7c700fa943f ro quiet splash vt.handoff=1
SourcePackage: simple-scan
UpgradeStatus: Upgraded to cosmic on 2018-10-23 (67 days ago)
dmi.bios.date: 01/28/2015
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A10
dmi.board.name: 0MC4K5
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A10
dmi.modalias: dmi:bvnDellInc.:bvrA10:bd01/28/2015:svnDellInc.:pnLatitude3540:pvrA10:rvnDellInc.:rn0MC4K5:rvrA00:cvnDellInc.:ct8:cvrA10:
dmi.product.name: Latitude 3540
dmi.product.sku: Latitude 3540
dmi.product.version: A10
dmi.sys.vendor: Dell Inc.