in Processes io_ops is not shown

[DarkDau]

Error Messages i.e. ERROR: No DS called 'value' in '/var/lib/collectd/rrd/domain.de/processes-pg_autovacuum/io_ops.rrd'

I solved it in that way:
in CGP/inc/types.db:
Added
io_ops read:DERIVE:0:U, write:DERIVE:0:U

in
CGP/plugin/processes.json
Added

        "ps_io_ops": {
                "title": "IO Operations ({{PI}}) on {{HOST}}",
                "vertical": "Ops per second",
                "type": "io",
                "legend": {
                        "read": {
                                "name": "Read",
                                "color": "0000ff"
                        },
                        "write": {
                                "name": "Write",
                                "color": "00b000"
                        }
                },