Preview blackout or the failure to parse message

[spring-haru]

I encountered the same problem as #2.

If the following is used in yazi.toml, then nothing is shown (preview blackout)

{ mime = "text/csv", run = "miller"},

If the following is set

{ mime = "text/csv", exec = "miller"},

then the the following message pops up when I start Yazi

Failed to parse the [plugin] section in your yazi.toml

Caused by:
TOML parse error at line 243, column 1
    |
243 | [[plugin.prepend_previewers]]
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
missing field `run`

Yazi 0.3.3