I could find some error logs in the parallels.log:
03-27 23:54:41.376 F /vdisk:62619:128ec7/ !!! ERROR: GetEncryptionSalt for VMDK is unimplemented!
03-27 23:54:41.414 F /HddUtils:62619:128ec7/ hdd: RH enabled on disk 1
03-27 23:54:41.414 F /AbstractFile:62619:128ec7/ open64() error: 20, flags = 0x0, disp = 0x1000000
03-27 23:54:45.358 F /vdisk:62619:128efc/ Wrong cache content at 'read': snap id 0/0x0 is out of range (<= 0) [lba = 0, storage 0, offset 0x280]. Internal error.
03-27 23:54:45.381 F /vdisk:62619:128efc/ CacheFile: invalid bitmap (not loaded?)
03-27 23:54:45.381 F /vdisk:62619:128efc/ DiskGroups: } cache file
03-27 23:54:45.381 F /vdisk:62619:128efc/ ASSERT( false ) occured in DiskStatesImp.cpp:1910 [SubmitAsync]
03-27 23:54:45.381 F /HddUtils:62619:128efc/ ERROR: 8
03-27 23:54:45.381 F /LocalDevices:62619:128efc/ [hdd::sata:1] restart flags 0x00001000 dl 12515
03-27 23:54:45.381 F /vdisk:62619:128efc/ Wrong cache content at 'read': snap id 0/0x0 is out of range (<= 0) [lba = 0, storage 0, offset 0x280]. Internal error.