KM02906: ERROR_UnicodeSetHasProperties

The provided uset uses property notation (\p{…} or [:…:]). LDML keyboards do not support Unicode properties in usets, because that would make implementations dependent on a particular version of Unicode. To resolve this, reformat the uset to avoid the use of properties.

More on uset: https://www.unicode.org/reports/tr35/tr35-keyboards.html#element-uset