Failed to find template header file header.dxf for reading,

[metinvatansever]

I'm trying to export some data to dxf. But it gives this error. Can someone help me ?

Failed to find template header file header.dxf for reading, is GDAL_DATA set properly?

gdal-async version : 3.9.2

[mmomtchev]

I am surprised that whoever told you about this, did not tell you how to fix it:

cp node_modules/gdal-async/deps/libgdal/gdal/ogr/ogrsf_frmts/dxf/data/header.dxf node_modules/gdal-async/deps/libgdal/gdal/data

This is difficult to fix until the JavaScript version hasn't been completely rewritten to use SWIG and CMake as all other ports.