Thank you for the report. This is a strange error. Can you run the following command in a terminal and share the output?
sudo apt install --reinstall firefox firefox-locale-en firefox- locale-zh-hans ** Changed in: firefox (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1834388 Title: package firefox-locale-zh-hans 66.0.3+build1-0ubuntu0.16.04.1 failed to install/upgrade: 正试图覆盖 /usr/lib/firefox,它同时被包含于软件包 firefox-locale- en 66.0.3+build1-0ubuntu0.16.04.1 Status in firefox package in Ubuntu: Incomplete Bug description: I often recieved this error warning after opening computer ProblemType: Package DistroRelease: Ubuntu 16.04 Package: firefox-locale-zh-hans 66.0.3+build1-0ubuntu0.16.04.1 ProcVersionSignature: Ubuntu 4.13.0-38.43~16.04.1-generic 4.13.16 Uname: Linux 4.13.0-38-generic x86_64 NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia AddonCompatCheckDisabled: False ApportVersion: 2.20.1-0ubuntu2.18 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: upc 3093 F.... pulseaudio /dev/snd/controlC0: upc 3093 F.... pulseaudio Channel: Unavailable Date: Wed Jun 26 06:48:07 2019 Dependencies: ErrorMessage: 正试图覆盖 /usr/lib/firefox,它同时被包含于软件包 firefox-locale-en 66.0.3+build1-0ubuntu0.16.04.1 ForcedLayersAccel: False IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2018-03-27 (456 days ago) InstallationMedia: Ubuntu 16.04.4 LTS "Xenial Xerus" - Release amd64 (20180228) IpRoute: default via 180.201.128.1 dev enp0s31f6 proto static metric 100 169.254.0.0/16 dev enp0s31f6 scope link metric 1000 180.201.128.0/18 dev enp0s31f6 proto kernel scope link src 180.201.140.117 metric 100 NoProfiles: True PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: dpkg 1.18.4ubuntu1.3 apt 1.2.29ubuntu0.1 RunningIncompatibleAddons: False SourcePackage: firefox Title: package firefox-locale-zh-hans 66.0.3+build1-0ubuntu0.16.04.1 failed to install/upgrade: 正试图覆盖 /usr/lib/firefox,它同时被包含于软件包 firefox-locale-en 66.0.3+build1-0ubuntu0.16.04.1 UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/23/2017 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1009 dmi.board.asset.tag: Default string dmi.board.name: PRIME Z270-A dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1009:bd07/23/2017:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnPRIMEZ270-A:rvrRev1.xx:cvnDefaultstring:ct3:cvrDefaultstring: dmi.product.family: To be filled by O.E.M. dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1834388/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp