UBX Checksum errors are back

[Stefal]

Subject of the issue

I get some checksum errors in ubx file

Your workbench

• What version of RTK firmware are you running? v4.0
• What radios are you using: Bluetooth

Steps to reproduce

Mode : Rover connected to a base station via Ntrip (Bluetooth)
Frequency : 5HZ
Nmea : default settings
ubx : NAV_HPPOSLLH, NAV_PVT, NAV_SAT, NAV_TIMEGPS, NAV_TIMEUTC

Results with UBX Integrity Checker :

UBX Sync Char 1 (0xB5) found at byte 42559775. Checking for Sync Char 2
NMEA $ found at byte 42560419. Attempting to process the message
Panic!! Excessive NMEA message length!
Sync lost at byte 43492973. Attemting to re-sync
Panic! Maximum rewind attempts reached! Aborting...

Processed 43492975 bytes
File size was 70826020
FILE SIZE MISMATCH!!
Longest valid UBX message was 652 bytes
Longest valid NMEA message was 85 characters
Message types and totals were:
Message type: GNTXT   Total: 6
Message type: 0x01 0x07   Total: 37389
Message type: 0x01 0x14   Total: 37396
Message type: 0x01 0x35   Total: 37386
Message type: 0x01 0x20   Total: 37430
Message type: 0x01 0x21   Total: 37429
Message type: GNRMC   Total: 7471
Message type: GNGGA   Total: 7472
Message type: GNGSA   Total: 37378
Message type: GPGSV   Total: 53888
Message type: GLGSV   Total: 39508
Message type: GAGSV   Total: 39234
Message type: GBGSV   Total: 36150
Message type: GQGSV   Total: 7495
Message type: GNGST   Total: 7495
Number of successful resyncs: 101