SSD ext4_find_entry:1454 : read only

I'm using Ubuntu 18.04, recently i remark that Randomly the computer just goes read only and if I go to command line screen typing Alt+Ctrl+F1 i get :
https://imgur.com/a/Kf04JE5

I launched smartctl analyis here is the output :

smartctl 6.6 2016-05-31 r4324 [x86_64-linux-4.15.0-96-generic] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Device Model: TCSUNBOW N8 120GB
Serial Number: 2017101700034
Firmware Version: Q0607A
User Capacity: 120,034,123,776 bytes [120 GB]
Sector Size: 512 bytes logical/physical
Rotation Rate: Solid State Device
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: ACS-2 (minor revision not indicated)
SATA Version is: SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Tue Apr 28 17:05:20 2020 CEST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status: (0x00) Offline data collection activity
     was never started.
     Auto Offline Data Collection: Disabled.
Self-test execution status: ( 0) The previous self-test routine completed
     without error or no self-test has ever
     been run.
Total time to complete Offline
data collection: ( 0) seconds.
Offline data collection
capabilities: (0x71) SMART execute Offline immediate.
     No Auto Offline data collection support.
     Suspend Offline collection upon new
     command.
     No Offline surface scan supported.
     Self-test supported.
     Conveyance Self-test supported.
     Selective Self-test supported.
SMART capabilities: (0x0002) Does not save SMART data before
     entering power-saving mode.
     Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
     General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 1) minutes.
Extended self-test routine
recommended polling time: ( 2) minutes.
Conveyance self-test routine
recommended polling time: ( 1) minutes.
SCT capabilities: (0x0035) SCT Status supported.
     SCT Feature Control supported.
     SCT Data Table supported.

SMART Attributes Data Structure revision number: 1
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate 0x0000 100 100 000 Old_age Offline - 0
  5 Reallocated_Sector_Ct 0x0000 100 100 000 Old_age Offline - 0
  9 Power_On_Hours 0x0000 100 100 000 Old_age Offline - 2056
 12 Power_Cycle_Count 0x0000 100 100 000 Old_age Offline - 902
160 Unknown_Attribute 0x0000 100 100 000 Old_age Offline - 0
161 Unknown_Attribute 0x0000 100 100 000 Old_age Offline - 120
163 Unknown_Attribute 0x0000 100 100 000 Old_age Offline - 3
164 Unknown_Attribute 0x0000 100 100 000 Old_age Offline - 24167
165 Unknown_Attribute 0x0000 100 100 000 Old_age Offline - 76
166 Unknown_Attribute 0x0000 100 100 000 Old_age Offline - 1
167 Unknown_Attribute 0x0000 100 100 000 Old_age Offline - 12
168 Unknown_Attribute 0x0000 100 100 000 Old_age Offline - 1000
169 Unknown_Attribute 0x0000 100 100 000 Old_age Offline - 99
175 Program_Fail_Count_Chip 0x0000 100 100 000 Old_age Offline - 0
176 Erase_Fail_Count_Chip 0x0000 100 100 000 Old_age Offline - 0
177 Wear_Leveling_Count 0x0000 100 100 050 Old_age Offline - 1
178 Used_Rsvd_Blk_Cnt_Chip 0x0000 100 100 000 Old_age Offline - 0
181 Program_Fail_Cnt_Total 0x0000 100 100 000 Old_age Offline - 0
182 Erase_Fail_Count_Total 0x0000 100 100 000 Old_age Offline - 0
192 Power-Off_Retract_Count 0x0000 100 100 000 Old_age Offline - 112
194 Temperature_Celsius 0x0000 100 100 000 Old_age Offline - 49
195 Hardware_ECC_Recovered 0x0000 100 100 000 Old_age Offline - 0
196 Reallocated_Event_Count 0x0000 100 100 016 Old_age Offline - 0
197 Current_Pending_Sector 0x0000 100 100 000 Old_age Offline - 0
198 Offline_Uncorrectable 0x0000 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x0000 100 100 050 Old_age Offline - 0
232 Available_Reservd_Space 0x0000 100 100 000 Old_age Offline - 100
241 Total_LBAs_Written 0x0000 100 100 000 Old_age Offline - 68634
242 Total_LBAs_Read 0x0000 100 100 000 Old_age Offline - 146433
245 Unknown_Attribute 0x0000 100 100 000 Old_age Offline - 48334

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 0
Warning: ATA Specification requires self-test log structure revision number = 1
No self-tests have been logged. [To run self-tests, use: smartctl -t]

SMART Selective self-test log data structure revision number 1
 SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
    1 0 0 Not_testing
    2 0 0 Not_testing
    3 0 0 Not_testing
    4 0 0 Not_testing
    5 0 0 Not_testing
    6 0 65535 Read_scanning was never started
Selective self-test flags (0x0):
  After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.
---
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.14
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: lasngd 2921 F.... pulseaudio
 /dev/snd/controlC0: lasngd 2921 F.... pulseaudio
CurrentDesktop: MATE
DistroRelease: Ubuntu 18.04
InstallationDate: Installed on 2019-04-22 (372 days ago)
InstallationMedia: Ubuntu-Server 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
MachineType: GIGABYTE P35V6
NonfreeKernelModules: nvidia_modeset nvidia
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-96-generic root=UUID=25a311c3-072f-4a45-ae8f-5e83a4e2f216 ro i8042.kbdreset=1
ProcVersionSignature: Ubuntu 4.15.0-96.97-generic 4.15.18
RelatedPackageVersions:
 linux-restricted-modules-4.15.0-96-generic N/A
 linux-backports-modules-4.15.0-96-generic N/A
 linux-firmware 1.173.12
Tags: bionic
Uname: Linux 4.15.0-96-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 04/02/2018
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: FB10
dmi.board.asset.tag: Default string
dmi.board.name: P35V6
dmi.board.vendor: GIGABYTE
dmi.board.version: Default string
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 9
dmi.chassis.vendor: Default string
dmi.chassis.version: y.y
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrFB10:bd04/02/2018:svnGIGABYTE:pnP35V6:pvrDefaultstring:rvnGIGABYTE:rnP35V6:rvrDefaultstring:cvnDefaultstring:ct9:cvry.y:
dmi.product.family: Default string
dmi.product.name: P35V6
dmi.product.version: Default string
dmi.sys.vendor: GIGABYTE