VTS Add Tileset Loops Indefinitely

[gyenyame400]

Hi,
I'm trying to reproduce this example at https://vts-geospatial.org/tutorials/cadastre.html#cadastre-raster-vector-3d.
However, after completing ALL the steps, I get stuck trying to add the tileset into storage with the following command:

vts /var/vts/store/stage.melown2015 --add --tileset http://127.0.0.1:3070/melown2015/surface/cadastre/srtm --top

On the mapproxy side all tiles are served just fine until it loops indefinitely on the following tile: 15-8830-5485.
Here's the mapproxy-side log.

2022-09-12 11:47:24 I3 [10427(shttp:4)]: [conn:1] HTTP "GET /melown2015/surface/cadastre/srtm/15-8830-5485.rmesh?0 HTTP/1.1" 200 10385. {http.cpp:postLog():326}
2022-09-12 11:47:24 I2 [10427(shttp:3)]: [conn:1] HTTP "GET /melown2015/surface/cadastre/srtm/15-8830-5485.rmesh?0 HTTP/1.1". {http.cpp:prelogAndProcess():313}
2022-09-12 11:47:24 I3 [10427(shttp:2)]: [conn:1] HTTP "GET /melown2015/surface/cadastre/srtm/15-8830-5485.rmesh?0 HTTP/1.1" 200 10385. {http.cpp:postLog():326}
2022-09-12 11:47:24 I2 [10427(shttp:1)]: [conn:1] HTTP "GET /melown2015/surface/cadastre/srtm/15-8830-5485.rmesh?0 HTTP/1.1". {http.cpp:prelogAndProcess():313}
2022-09-12 11:47:25 I3 [10427(shttp:3)]: [conn:1] HTTP "GET /melown2015/surface/cadastre/srtm/15-8830-5485.rmesh?0 HTTP/1.1" 200 10385. {http.cpp:postLog():326}
2022-09-12 11:47:25 I2 [10427(shttp:4)]: [conn:1] HTTP "GET /melown2015/surface/cadastre/srtm/15-8830-5485.rmesh?0 HTTP/1.1". {http.cpp:prelogAndProcess():313}
2022-09-12 11:47:25 I3 [10427(shttp:1)]: [conn:1] HTTP "GET /melown2015/surface/cadastre/srtm/15-8830-5485.rmesh?0 HTTP/1.1" 200 10385. {http.cpp:postLog():326}
2022-09-12 11:47:25 I2 [10427(shttp:2)]: [conn:1] HTTP "GET /melown2015/surface/cadastre/srtm/15-8830-5485.rmesh?0 HTTP/1.1". {http.cpp:prelogAndProcess():313}
2022-09-12 11:47:25 I3 [10427(shttp:4)]: [conn:1] HTTP "GET /melown2015/surface/cadastre/srtm/15-8830-5485.rmesh?0 HTTP/1.1" 200 10385. {http.cpp:postLog():326}
2022-09-12 11:47:25 I2 [10427(shttp:3)]: [conn:1] HTTP "GET /melown2015/surface/cadastre/srtm/15-8830-5485.rmesh?0 HTTP/1.1". {http.cpp:prelogAndProcess():313}
2022-09-12 11:47:26 I3 [10427(shttp:2)]: [conn:1] HTTP "GET /melown2015/surface/cadastre/srtm/15-8830-5485.rmesh?0 HTTP/1.1" 200 10385. {http.cpp:postLog():326}
2022-09-12 11:47:26 I2 [10427(shttp:1)]: [conn:1] HTTP "GET /melown2015/surface/cadastre/srtm/15-8830-5485.rmesh?0 HTTP/1.1". {http.cpp:prelogAndProcess():313}
2022-09-12 11:47:26 I3 [10427(shttp:3)]: [conn:1] HTTP "GET /melown2015/surface/cadastre/srtm/15-8830-5485.rmesh?0 HTTP/1.1" 200 10385. {http.cpp:postLog():326}
2022-09-12 11:47:26 I2 [10427(shttp:4)]: [conn:1] HTTP "GET /melown2015/surface/cadastre/srtm/15-8830-5485.rmesh?0 HTTP/1.1". {http.cpp:prelogAndProcess():313}
2022-09-12 11:47:27 I3 [10427(shttp:1)]: [conn:1] HTTP "GET /melown2015/surface/cadastre/srtm/15-8830-5485.rmesh?0 HTTP/1.1" 200 10385. {http.cpp:postLog():326}
2022-09-12 11:47:27 I2 [10427(shttp:2)]: [conn:1] HTTP "GET /melown2015/surface/cadastre/srtm/15-8830-5485.rmesh?0 HTTP/1.1". {http.cpp:prelogAndProcess():313}
2022-09-12 11:47:27 I3 [10427(shttp:4)]: [conn:1] HTTP "GET /melown2015/surface/cadastre/srtm/15-8830-5485.rmesh?0 HTTP/1.1" 200 10385. {http.cpp:postLog():326}
2022-09-12 11:47:27 I2 [10427(shttp:3)]: [conn:1] HTTP "GET /melown2015/surface/cadastre/srtm/15-8830-5485.rmesh?0 HTTP/1.1". {http.cpp:prelogAndProcess():313}
2022-09-12 11:47:28 I3 [10427(shttp:2)]: [conn:1] HTTP "GET /melown2015/surface/cadastre/srtm/15-8830-5485.rmesh?0 HTTP/1.1" 200 10385. {http.cpp:postLog():326}
2022-09-12 11:47:28 I2 [10427(shttp:1)]: [conn:1] HTTP "GET /melown2015/surface/cadastre/srtm/15-8830-5485.rmesh?0 HTTP/1.1". {http.cpp:prelogAndProcess():313}
2022-09-12 11:47:28 I3 [10427(shttp:2)]: [conn:1] HTTP "GET /melown2015/surface/cadastre/srtm/15-8830-5485.rmesh?0 HTTP/1.1" 500 310 [No response sent.]

[gyenyame400]

Hi,
The "bug" above doesn't prevent the example from running flawlessly.