Sometimes DAPLINK fails

Hello,

Sometimes copying to DAPLINK (or drag-and-drop) causes it to fail with the following files:
ASSERT.TXT
```
Assert
File: ..\..\..\source\daplink\interface\target_flash.c
Line: 396
Source: Application
```

FAIL.TXT
```
error: An internal error has occurred
type: internal
```

DETAILS.TXT
```
# DAPLink Firmware - see https://mbed.com/daplink
Unique ID: 190B1301f3021c1c02f3021c00000000000000002e127069
HIC ID: 2e127069
Auto Reset: 1
Automation allowed: 1
Overflow detection: 1
Incompatible image detection: 0
Page erasing: 1
Daplink Mode: Interface
Interface Version: 0256
Git SHA: 928cf87630e3a4f51854689f8a62075e5bb00913
Local Mods: 0
USB Interfaces: MSD, CDC, HID, WebUSB
Interface CRC: 0x48d4a325
Remount count: 2
URL: https://mbed.org/device/?code=@U?version=@V?target_id=@T
```

I'm using a dev kit from PSoC: CY8CKIT-062S2-43012

What should I do when such an error happens? Is it related to the firmware I wish to flash? I tried to have a minimalistic firmware as well (just an infinite loop in main) and it still fails. Some other times it works fine for hours, other times the above error shows up and sticks to it for some time.