why lost network after succssfully

why lost network after succssfully

some time work and some time lost network after restart again com then go after 10 mintus go network
i root with magisk 19.3
plz any solution

Operation: Repair
Selected model: SM-G965F
Software version: 37.0

Waiting ADB device... OK
Reading phone info...
Model: SM-G965F
Android version: 9
PDA version: G965FXXU5CSF2
CSC version: G965FOXM5CSF2
Phone version: G965FXXU5ASF1
Product code: SM-G965FZPAPHE
CSC country code: SPAIN
CSC sales code: PHE
Phone SN: RF8K42YSQAV
IMEI: 3576300907721**
HW version: MP 0.900
RF cal date: 20180427
Chip name: EXYNOS9810
Modem board: SHANNON360
Security patch: 2019-06-01
Boot Warranty bit: 1
SIM State: ABSENT
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... OK
Searching server... OK
Checking server answer... OK
Executing... OK
Reading data from phone... OK
Calculating... OK
Searching server... OK
Waiting for server answer... OK
Writing security... OK
Rebooting phone... OK

Operation: Patch Certificate
Selected model: SM-G965F
Software version: 37.0

Waiting ADB device... OK
Reading phone info...
Model: SM-G965F
Android version: 9
PDA version: G965FXXU5CSF2
CSC version: G965FOXM5CSF2
Phone version: G965FXXU5ASF1
Product code: SM-G965FZPAPHE
CSC country code: SPAIN
CSC sales code: PHE
Phone SN: RF8K42YSQAV
IMEI: 3576300907721**
HW version: MP 0.900
RF cal date: 20180427
Chip name: EXYNOS9810
Modem board: SHANNON360
Security patch: 2019-06-01
Boot Warranty bit: 1
SIM State: ABSENT
Checking Super user right... true
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... OK
Searching server... OK
Checking server answer... OK
Executing... OK
Searching server... OK
Waiting for server answer... OK
Patching... OK
Rebooting phone... OK