For anyone who comes across this, a temporary fix is to run:
sed -i '6034s/\[\(\\d\)-:\]/[\1:-]/' /etc/apache2/conf.d/modsec_vendor_configs/comodo_apache/30_Apps_OtherApps.conf
This safely rewrites [\d-:] to [\d:-] on line 6034.
For anyone who comes across this, a temporary fix is to run:
sed -i '6034s/\[\(\\d\)-:\]/[\1:-]/' /etc/apache2/conf.d/modsec_vendor_configs/comodo_apache/30_Apps_OtherApps.conf
This safely rewrites [\d-:] to [\d:-] on line 6034.