Training data size issue

Dear all,
I am having an issue with the size of a training data shape.

For the L4B processor I have prepared a training data shape containing reference parcels. Now the problems is a follows:

The L4B processor does not start if I use the .zipped shape with its full content (around 5000 polygons in total). All I get via the GUI is a blank screen. THe log via journalctl -f shows not specific entries, as far as I can see,

If I reduce the same shape to contain 4000 polygons (in total), the L4B process starts without any problems.

Any ideas? Is there a polygon count limit for the training data?



There is a validation step for the shapefile. It’s possible that it takes too long for that file. Can you share the shapefile with us? You can send it over email at

I have just send you the file via email.


The error should be visible in /var/log/httpd/error_log. Something like:

PHP Warning:  POST Content-Length of 8427966 bytes exceeds the limit of 8388608 bytes

You should edit /etc/php.ini and increase the size of post_max_size to say 20M or something like that. It’s 8M by default. You can the run sudo systemctl reload httpd and retry.

So simple :grinning:
Thanks it worked.

please, can I have an example of these Training data (attribute, projection,…).
thank you