updating to 10.3.2 fixed the issue of uploading the file.
I now have a different issue:
[
{
"id": "s5n19ogdn7dhiy9gnssarf3wya",
"type": "import_process",
"priority": 0,
"create_at": 1737119304306,
"start_at": 1737119311194,
"last_activity_at": 1737119312525,
"status": "error",
"progress": -1,
"data": {
"error": "Error during job execution. — UpdateUserRoles: Cannot demote last System Admin.",
"import_file": "x153b9iqhfdmdy77qjsqgmt7ae_mattermost-bulk-import.zip",
"line_number": "45"
}
}
]