Unable to load ods file in mail merged document

I’m trying to make mail merge odt document with fields from libreoffice calc file,and once I connect the file and create my fields everything works, and I can switch between the different entries in the file, but once I save any number of merged documents and re-enter the writer I can not move between entries and the writer simply does not see the database, if i press ctrl+shift+f4 (data structures shortcut) it shows me this error
soffice.bin_lAWbr0lvXE
"the connection to the data source could not be established "
while .ods file is still there…
The error is same on both of my windows and linux machines

menu:View>Data sources… [Ctrl+Shift+F4]
Right-click “baza” > Edit Database…
In the database window: menu:Edit>Database>Properties… and browse to the spreadsheet file.
Save and close the database.