I'm new to dxf format, but wrote this `test.dxf`:

```
0
SECTION
2
ENTITIES
0
LINE
8
Polygon
10
0.0
20
0.0
11
100.0
21
0.0
0
LINE
8
Polygon
10
100.0
20
0.0
11
100.0
21
100.0
0
LINE
8
Polygon
10
0.0
20
0.0
11
100.0
21
100.0
0
ENDSEC
0
EOF
```
I was able to open it in AutoCAD 2019, but get the following error when I tried to convert to DWG version using `dxf2dwg`:
```ERROR: File test.dxf too small, 225 byte.```
dxf2dwg ERROR: File test.dxf too small, 225 byte.
This is a GitHub Issue
repo:libredwg
owner:LibreDWG
Title : dxf2dwg ERROR: File test.dxf too small, 225 byte.
Issue date:

--- start body ---
I'm new to dxf format, but wrote this `test.dxf`:

```
0
SECTION
2
ENTITIES
0
LINE
8
Polygon
10
0.0
20
0.0
11
100.0
21
0.0
0
LINE
8
Polygon
10
100.0
20
0.0
11
100.0
21
100.0
0
LINE
8
Polygon
10
0.0
20
0.0
11
100.0
21
100.0
0
ENDSEC
0
EOF
```
I was able to open it in AutoCAD 2019, but get the following error when I tried to convert to DWG version using `dxf2dwg`:
```ERROR: File test.dxf too small, 225 byte.```
--- end body ---
