Looks like you misspelled the field name as "Meeting Data" rather than "Meeting Date" which is the column header in the data file. They have to match exactly. Just go back to Setup > Object Manager > Meeting > Fields & Relationships and select Meeting Data and edit it and fix the spelling.
Looks like you misspelled the field name as "Meeting Data" rather than "Meeting Date" which is the column header in the data file. They have to match exactly. Just go back to Setup > Object Manager > Meeting > Fields & Relationships and select Meeting Data and edit it and fix the spelling.