Can't uninstall from Ubuntu 20.10

[jasmines]

$ cat /var/crash/dattobd-dkms.0.crash                    
ProblemType: Package
DKMSBuildLog:
 DKMS make.log for dattobd-0.10.15 for kernel 5.8.0-29-generic (x86_64)
 mer 25 nov 2020, 16:44:53, CET
 make: ingresso nella directory «/usr/src/linux-headers-5.8.0-29-generic»
   CC [M]  /var/lib/dkms/dattobd/0.10.15/build/dattobd.o
 In file included from ./include/linux/umh.h:4,
                  from ./include/linux/kmod.h:9,
                  from ./include/linux/module.h:16,
                  from /var/lib/dkms/dattobd/0.10.15/build/includes.h:10,
                  from /var/lib/dkms/dattobd/0.10.15/build/dattobd.c:7:
 /var/lib/dkms/dattobd/0.10.15/build/dattobd.c: In function ‘__tracer_setup_snap’:
 ./include/linux/gfp.h:297:20: warning: passing argument 1 of ‘blk_alloc_queue’ makes pointer from integer without a cast [-Wint-conversion]
   297 | #define GFP_KERNEL (__GFP_RECLAIM | __GFP_IO | __GFP_FS)
       |                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
       |                    |
       |                    unsigned int
 /var/lib/dkms/dattobd/0.10.15/build/dattobd.c:3574:34: note: in expansion of macro ‘GFP_KERNEL’
  3574 |  dev->sd_queue = blk_alloc_queue(GFP_KERNEL);
       |                                  ^~~~~~~~~~
 In file included from /var/lib/dkms/dattobd/0.10.15/build/includes.h:12,
                  from /var/lib/dkms/dattobd/0.10.15/build/dattobd.c:7:
 ./include/linux/blkdev.h:1174:55: note: expected ‘blk_qc_t (*)(struct request_queue *, struct bio *)’ {aka ‘unsigned int (*)(struct request_queue *, struct bio *)’} but argument is of type ‘unsigned int’
  1174 | struct request_queue *blk_alloc_queue(make_request_fn make_request, int node_id);
       |                                       ~~~~~~~~~~~~~~~~^~~~~~~~~~~~
 /var/lib/dkms/dattobd/0.10.15/build/dattobd.c:3574:18: error: too few arguments to function ‘blk_alloc_queue’
  3574 |  dev->sd_queue = blk_alloc_queue(GFP_KERNEL);
       |                  ^~~~~~~~~~~~~~~
 In file included from /var/lib/dkms/dattobd/0.10.15/build/includes.h:12,
                  from /var/lib/dkms/dattobd/0.10.15/build/dattobd.c:7:
 ./include/linux/blkdev.h:1174:23: note: declared here
  1174 | struct request_queue *blk_alloc_queue(make_request_fn make_request, int node_id);
       |                       ^~~~~~~~~~~~~~~
 /var/lib/dkms/dattobd/0.10.15/build/dattobd.c:3583:2: error: implicit declaration of function ‘blk_queue_make_request’; did you mean ‘blk_queue_max_segments’? [-Werror=implicit-function-declaration]
  3583 |  blk_queue_make_request(dev->sd_queue, snap_mrf);
       |  ^~~~~~~~~~~~~~~~~~~~~~
       |  blk_queue_max_segments
 /var/lib/dkms/dattobd/0.10.15/build/dattobd.c: In function ‘agent_init’:
 /var/lib/dkms/dattobd/0.10.15/build/dattobd.c:5165:51: error: passing argument 4 of ‘proc_create’ from incompatible pointer type [-Werror=incompatible-pointer-types]
  5165 |  info_proc = proc_create(INFO_PROC_FILE, 0, NULL, &dattobd_proc_fops);
       |                                                   ^~~~~~~~~~~~~~~~~~
       |                                                   |
       |                                                   const struct file_operations *
 In file included from /var/lib/dkms/dattobd/0.10.15/build/includes.h:16,
                  from /var/lib/dkms/dattobd/0.10.15/build/dattobd.c:7:
 ./include/linux/proc_fs.h:107:122: note: expected ‘const struct proc_ops *’ but argument is of type ‘const struct file_operations *’
   107 | struct proc_dir_entry *proc_create(const char *name, umode_t mode, struct proc_dir_entry *parent, const struct proc_ops *proc_ops);
       |                                                                                                   ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
 cc1: some warnings being treated as errors
 make[1]: *** [scripts/Makefile.build:290: /var/lib/dkms/dattobd/0.10.15/build/dattobd.o] Errore 1
 make: *** [Makefile:1780: /var/lib/dkms/dattobd/0.10.15/build] Errore 2
 make: uscita dalla directory «/usr/src/linux-headers-5.8.0-29-generic»
DKMSKernelVersion: 5.8.0-29-generic
Date: Wed Nov 25 16:44:56 2020
DuplicateSignature: dkms:dattobd-dkms:0.10.15-29.1ubuntu20.04:/var/lib/dkms/dattobd/0.10.15/build/dattobd.c:3574:18: error: too few arguments to function ‘blk_alloc_queue’
Package: dattobd-dkms 0.10.15-29.1ubuntu20.04
PackageVersion: 0.10.15-29.1ubuntu20.04
SourcePackage: dattobd-dkms
Title: dattobd-dkms 0.10.15-29.1ubuntu20.04: dattobd kernel module failed to build