I uploaded a personnalized model, but I think my Json file was wrong. Now everytime i reload the dasboard i get the error "Cannot get models meta information: Getting meta request has been failed. Code: 400. Message: Expecting value: line 1 column 1 (char 0)", and when i try to go to model manager, i get a "The managers are being setup.." that never ends.

Here's the output of "docker logs cvat":

simon@simon-VirtualBox:~/cvat$ docker logs cvat
2019-07-09 08:23:24,419 INFO RPC interface 'supervisor' initialized
2019-07-09 08:23:24,419 CRIT Server 'unix_http_server' running without any HTTP authentication checking
2019-07-09 08:23:24,420 INFO supervisord started with pid 1
2019-07-09 08:23:25,422 INFO spawned: 'ssh-agent' with pid 8
2019-07-09 08:23:25,424 INFO spawned: 'git_status_updater' with pid 9
2019-07-09 08:23:25,426 INFO spawned: 'rqworker_low' with pid 10
2019-07-09 08:23:25,428 INFO spawned: 'runserver' with pid 12
2019-07-09 08:23:25,430 INFO spawned: 'rqworker_default_0' with pid 13
2019-07-09 08:23:25,432 INFO spawned: 'rqworker_default_1' with pid 14
2019-07-09 08:23:25,467 DEBG 'ssh-agent' stdout output:
SSH_AUTH_SOCK=/tmp/ssh-agent.sock; export SSH_AUTH_SOCK;
echo Agent pid 15;

2019-07-09 08:23:25,467 DEBG 'ssh-agent' stderr output:
debug2: fd 3 setting O_NONBLOCK

2019-07-09 08:23:25,497 DEBG 'runserver' stderr output:
wait-for-it.sh: waiting for db:5432 without a timeout

2019-07-09 08:23:25,498 DEBG 'git_status_updater' stderr output:
wait-for-it.sh: waiting for redis:6379 without a timeout

2019-07-09 08:23:25,498 DEBG 'rqworker_low' stderr output:
wait-for-it.sh: waiting for redis:6379 without a timeout

2019-07-09 08:23:25,499 DEBG 'rqworker_default_0' stderr output:
wait-for-it.sh: waiting for cvat_redis:6379 without a timeout

2019-07-09 08:23:25,499 DEBG 'rqworker_default_1' stderr output:
wait-for-it.sh: waiting for cvat_redis:6379 without a timeout

2019-07-09 08:23:25,504 DEBG 'rqworker_default_1' stderr output:
wait-for-it.sh: cvat_redis:6379 is available after 0 seconds

2019-07-09 08:23:25,505 DEBG 'rqworker_default_0' stderr output:
wait-for-it.sh: cvat_redis:6379 is available after 0 seconds

2019-07-09 08:23:25,507 DEBG 'git_status_updater' stderr output:
wait-for-it.sh: redis:6379 is available after 0 seconds

2019-07-09 08:23:25,507 DEBG 'runserver' stderr output:
wait-for-it.sh: db:5432 is available after 0 seconds

2019-07-09 08:23:25,507 DEBG 'rqworker_default_0' stderr output:
bash: cannot set terminal process group (-1): Inappropriate ioctl for device
bash: no job control in this shell

2019-07-09 08:23:25,507 DEBG 'rqworker_default_1' stderr output:
bash: cannot set terminal process group (-1): Inappropriate ioctl for device
bash: no job control in this shell

2019-07-09 08:23:25,509 DEBG 'git_status_updater' stderr output:
bash: cannot set terminal process group (-1): Inappropriate ioctl for device
bash: no job control in this shell

2019-07-09 08:23:25,509 DEBG 'rqworker_low' stderr output:
wait-for-it.sh: redis:6379 is available after 0 seconds

2019-07-09 08:23:25,509 DEBG 'runserver' stderr output:
bash: cannot set terminal process group (-1): Inappropriate ioctl for device
bash: no job control in this shell

2019-07-09 08:23:25,510 DEBG 'rqworker_low' stderr output:
bash: cannot set terminal process group (-1): Inappropriate ioctl for device

2019-07-09 08:23:25,510 DEBG 'rqworker_low' stderr output:
bash: no job control in this shell

2019-07-09 08:23:25,930 DEBG 'git_status_updater' stdout output:
[setupvars.sh] OpenVINO environment initialized

2019-07-09 08:23:25,937 DEBG 'rqworker_low' stdout output:
[setupvars.sh] OpenVINO environment initialized

2019-07-09 08:23:25,941 DEBG 'runserver' stdout output:
[setupvars.sh] OpenVINO environment initialized

2019-07-09 08:23:25,949 DEBG 'rqworker_default_0' stdout output:
[setupvars.sh] OpenVINO environment initialized

2019-07-09 08:23:25,976 DEBG 'rqworker_default_1' stdout output:
[setupvars.sh] OpenVINO environment initialized

2019-07-09 08:23:26,349 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-09 08:23:26,350 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-09 08:23:26,353 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK
debug1: type 11

2019-07-09 08:23:26,353 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-09 08:23:26,373 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-09 08:23:26,377 DEBG 'ssh-agent' stderr output:
debug1: type 17

2019-07-09 08:23:26,379 DEBG 'rqworker_low' stderr output:
Identity added: /home/django/.ssh/id_rsa (/home/django/.ssh/id_rsa)

2019-07-09 08:23:26,379 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-09 08:23:26,383 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-09 08:23:26,384 DEBG 'ssh-agent' stderr output:
debug1: type 17

2019-07-09 08:23:26,386 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-09 08:23:26,389 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK
debug1: type 11

2019-07-09 08:23:26,389 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-09 08:23:26,393 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-09 08:23:26,394 DEBG 'ssh-agent' stderr output:
debug1: type 17

2019-07-09 08:23:26,396 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-09 08:23:26,402 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-09 08:23:26,403 DEBG 'ssh-agent' stderr output:
debug1: type 11

2019-07-09 08:23:26,403 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-09 08:23:26,407 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-09 08:23:26,409 DEBG 'ssh-agent' stderr output:
debug1: type 17

2019-07-09 08:23:26,410 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-09 08:23:26,414 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK
debug1: type 11

2019-07-09 08:23:26,414 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-09 08:23:26,419 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-09 08:23:26,421 DEBG 'ssh-agent' stderr output:
debug1: type 17

2019-07-09 08:23:26,424 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-09 08:23:26,424 INFO success: ssh-agent entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2019-07-09 08:23:26,424 INFO success: git_status_updater entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2019-07-09 08:23:26,427 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK
debug1: type 11

2019-07-09 08:23:26,427 INFO success: rqworker_low entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2019-07-09 08:23:26,427 INFO success: runserver entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2019-07-09 08:23:26,428 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-09 08:23:27,428 INFO success: rqworker_default_0 entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2019-07-09 08:23:27,428 INFO success: rqworker_default_1 entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2019-07-09 08:23:34,992 DEBG 'rqworker_low' stderr output:
System check identified some issues:

WARNINGS:
?: (2_0.W001) Your URL pattern 'api/swagger.slug:format$' [name='schema-json'] has a route that contains '(?P<', begins with a '^', or ends with a '$'. This was likely an oversight when migrating to django.urls.path().
08:23:34 RQ worker 'rq:worker:c98d5f4c9d01433ba5e6f38cd5a75df5' started, version 1.0

2019-07-09 08:23:34,992 DEBG 'rqworker_low' stderr output:
08:23:34 *** Listening on low...

2019-07-09 08:23:34,993 DEBG 'rqworker_default_1' stderr output:
System check identified some issues:

WARNINGS:
?: (2_0.W001) Your URL pattern 'api/swagger.slug:format$' [name='schema-json'] has a route that contains '(?P<', begins with a '^', or ends with a '$'. This was likely an oversight when migrating to django.urls.path().
08:23:34 RQ worker 'rq:worker:0422d72e435b4483a5eb939a83c3e795' started, version 1.0

2019-07-09 08:23:34,993 DEBG 'rqworker_default_1' stderr output:
08:23:34 *** Listening on default...

2019-07-09 08:23:34,994 DEBG 'rqworker_default_1' stderr output:
08:23:34 Cleaning registries for queue: default

2019-07-09 08:23:34,994 DEBG 'rqworker_low' stderr output:
08:23:34 Cleaning registries for queue: low

2019-07-09 08:23:34,998 DEBG 'rqworker_default_0' stderr output:
System check identified some issues:

WARNINGS:
?: (2_0.W001) Your URL pattern 'api/swagger.slug:format$' [name='schema-json'] has a route that contains '(?P<', begins with a '^', or ends with a '$'. This was likely an oversight when migrating to django.urls.path().
08:23:34 RQ worker 'rq:worker:5e2d70c5b9d240839954378134223037' started, version 1.0

2019-07-09 08:23:34,998 DEBG 'rqworker_default_0' stderr output:
08:23:34 *** Listening on default...

2019-07-09 08:23:35,937 DEBG 'runserver' stderr output:
System check identified some issues:

WARNINGS:
?: (2_0.W001) Your URL pattern 'api/swagger.slug:format$' [name='schema-json'] has a route that contains '(?P<', begins with a '^', or ends with a '$'. This was likely an oversight when migrating to django.urls.path().

2019-07-09 08:23:35,938 DEBG 'runserver' stdout output:
Operations to perform:
Apply all migrations: admin, auth, auto_annotation, contenttypes, engine, git, sessions
Running migrations:
No migrations to apply.

2019-07-09 08:23:36,396 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-09 08:23:36,399 DEBG 'ssh-agent' stderr output:
debug1: type 17

2019-07-09 08:23:36,399 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-09 08:23:36,403 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK
debug1: type 11

2019-07-09 08:23:36,403 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-09 08:23:36,966 DEBG 'runserver' stdout output:

0 static files copied to '/home/django/static', 376 unmodified.

2019-07-09 08:23:37,199 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK

2019-07-09 08:23:37,201 DEBG 'ssh-agent' stderr output:
debug1: type 17

2019-07-09 08:23:37,203 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-09 08:23:37,207 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK
debug1: type 11

2019-07-09 08:23:37,222 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-09 08:23:38,856 DEBG 'runserver' stdout output:
Successfully ran command.
Server URL : http://localhost:8080/
Server Root : /tmp/mod_wsgi-localhost:8080:1000
Server Conf : /tmp/mod_wsgi-localhost:8080:1000/httpd.conf
Error Log File : /dev/stderr (INFO)
Request Capacity : 5 (1 process * 5 threads)
Request Timeout : 60 (seconds)
Startup Timeout : 15 (seconds)
Queue Backlog : 100 (connections)
Queue Timeout : 45 (seconds)
Server Capacity : 20 (event/worker), 20 (prefork)
Server Backlog : 500 (connections)
Locale Setting : C.UTF-8

2019-07-09 08:23:38,894 DEBG 'runserver' stderr output:
[Tue Jul 09 08:23:38.894052 2019] [wsgi:info] [pid 181:tid 140163043092352] mod_wsgi (pid=181): Starting process 'localhost:8080' with threads=5.
[Tue Jul 09 08:23:38.894177 2019] [mpm_event:notice] [pid 12:tid 140163043092352] AH00489: Apache/2.4.18 (Ubuntu) mod_wsgi/4.6.2 Python/3.5 configured -- resuming normal operations
[Tue Jul 09 08:23:38.894234 2019] [mpm_event:info] [pid 12:tid 140163043092352] AH00490: Server built: 2019-04-03T13:34:47
[Tue Jul 09 08:23:38.894240 2019] [core:notice] [pid 12:tid 140163043092352] AH00094: Command line: 'apache2 (mod_wsgi-express) -f /tmp/mod_wsgi-localhost:8080:1000/httpd.conf -D MOD_WSGI_MPM_ENABLE_EVENT_MODULE -D MOD_WSGI_MPM_EXISTS_EVENT_MODULE -D MOD_WSGI_MPM_EXISTS_WORKER_MODULE -D MOD_WSGI_MPM_EXISTS_PREFORK_MODULE -D FOREGROUND'

2019-07-09 08:23:38,894 DEBG 'runserver' stderr output:
[Tue Jul 09 08:23:38.894541 2019] [wsgi:info] [pid 181:tid 140163043092352] mod_wsgi (pid=181): Python home /usr.

2019-07-09 08:23:38,894 DEBG 'runserver' stderr output:
[Tue Jul 09 08:23:38.894565 2019] [wsgi:info] [pid 181:tid 140163043092352] mod_wsgi (pid=181): Initializing Python.

2019-07-09 08:23:38,923 DEBG 'runserver' stderr output:
[Tue Jul 09 08:23:38.921864 2019] [wsgi:info] [pid 181:tid 140163043092352] mod_wsgi (pid=181): Attach interpreter ''.

2019-07-09 08:23:38,928 DEBG 'runserver' stderr output:
[Tue Jul 09 08:23:38.925449 2019] [wsgi:info] [pid 181:tid 140163043092352] mod_wsgi (pid=181): Imported 'mod_wsgi'.
[Tue Jul 09 08:23:38.925519 2019] [wsgi:info] [pid 181:tid 140163043092352] mod_wsgi (pid=181, process='localhost:8080', application=''): Loading Python script file '/tmp/mod_wsgi-localhost:8080:1000/handler.wsgi'.

2019-07-09 08:23:39,205 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK
debug1: type 17

2019-07-09 08:23:39,207 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-09 08:23:39,213 DEBG 'ssh-agent' stderr output:
debug2: fd 4 setting O_NONBLOCK
debug1: type 11

2019-07-09 08:23:39,214 DEBG 'ssh-agent' stderr output:
debug1: XXX shrink: 3 < 4

2019-07-09 08:23:41,337 DEBG 'runserver' stderr output:
[Tue Jul 09 08:23:41.337214 2019] [wsgi:error] [pid 181:tid 140162826422016] [remote 172.19.0.1:39544] [2019-07-09 08:23:41,336] WARNING django.request: Not Found: /favicon.ico

2019-07-09 08:23:41,424 DEBG 'runserver' stderr output:
[Tue Jul 09 08:23:41.423992 2019] [wsgi:error] [pid 181:tid 140162834814720] [remote 172.19.0.1:39568] [2019-07-09 08:23:41,423] WARNING django.request: Bad Request: /auto_annotation/meta/get

2019-07-09 08:23:50,598 DEBG 'runserver' stderr output:
[Tue Jul 09 08:23:50.598400 2019] [wsgi:error] [pid 181:tid 140162818029312] [remote 10.33.128.86:54982] [2019-07-09 08:23:50,598] WARNING django.request: Bad Request: /auto_annotation/meta/get

2019-07-09 08:25:59,682 DEBG 'runserver' stderr output:
[Tue Jul 09 08:25:59.681968 2019] [wsgi:error] [pid 181:tid 140162843207424] [remote 10.33.128.86:55007] [2019-07-09 08:25:59,681] WARNING django.request: Bad Request: /auto_annotation/meta/get

2019-07-09 08:44:05,166 DEBG 'runserver' stderr output:
[Tue Jul 09 08:44:05.166158 2019] [wsgi:error] [pid 181:tid 140162834814720] [remote 10.33.128.86:55273] [2019-07-09 08:44:05,166] WARNING django.request: Bad Request: /auto_annotation/meta/get

2019-07-09 08:49:54,938 DEBG 'runserver' stderr output:
[Tue Jul 09 08:49:54.938086 2019] [wsgi:error] [pid 181:tid 140162809636608] [remote 172.19.0.1:39712] [2019-07-09 08:49:54,937] WARNING django.request: Bad Request: /auto_annotation/meta/get