Can’t change category image through wp-cli

$ wp wc product_cat get 41 --user=1
+-------------+-----------+
| Field       | Value     |
+-------------+-----------+
| id          | 41        |
| name        | Book Ends |
| slug        | book-ends |
| parent      | 0         |
| description |           |
| display     | default   |
| image       | null      |
| menu_order  | 0         |
| count       | 1         |
+-------------+-----------+

$ wp wc product list --user=1 --field=id --per_page=1 --category=41
203

$ wp post meta get 203 _thumbnail_id
168

$ wp post get 168 
+-----------------------+-------------------------------------------------------------------+
| Field                 | Value                                                             |
+-----------------------+-------------------------------------------------------------------+
| ID                    | 168                                                               |
| post_author           | 0                                                                 |
| post_date             | 2018-04-01 22:03:59                                               |
| post_date_gmt         | 2018-04-02 05:03:59                                               |
| post_content          |                                                                   |
| post_title            | 37978                                                             |
| post_excerpt          |                                                                   |
| post_status           | inherit                                                           |
| comment_status        | closed                                                            |
| ping_status           | closed                                                            |
| post_password         |                                                                   |
| post_name             | 37978                                                             |
| to_ping               |                                                                   |
| pinged                |                                                                   |
| post_modified         | 2018-04-01 22:03:59                                               |
| post_modified_gmt     | 2018-04-02 05:03:59                                               |
| post_content_filtered |                                                                   |
| post_parent           | 0                                                                 |
| guid                  | https://dragon.greetonix.com/wp-content/uploads/2018/04/37978.jpg |
| menu_order            | 0                                                                 |
| post_type             | attachment                                                        |
| post_mime_type        | image/jpeg                                                        |
| comment_count         | 0                                                                 |
+-----------------------+-------------------------------------------------------------------+

$ wp wc product_cat update 41 --image="{id: 168}" --user=1
Success: Updated product_cat 41.

$ wp wc product_cat get 41 --user=1
+-------------+-----------+
| Field       | Value     |
+-------------+-----------+
| id          | 41        |
| name        | Book Ends |
| slug        | book-ends |
| parent      | 0         |
| description |           |
| display     | default   |
| image       | null      |
| menu_order  | 0         |
| count       | 1         |
+-------------+-----------+

• This topic was modified 6 years ago by apb1963.
• This topic was modified 6 years ago by apb1963.
• This topic was modified 4 years, 6 months ago by Marius L. J..