Post Process error

Hello all,

The other day I found a need to use the Post Process option from my local EmonPi.
When clicking the link all I get is the following error

Fatal error : Call to undefined function postprocess_controller() in /var/www/emoncms/core.php on line 64

My “Server Information” is

Server Information
Services
emonhub Active Running
emoncms_mqtt Active Running
feedwriter Active Running - sleep 60s
service-runner Active Running
emonPiLCD Active Running
redis-server Active Running
mosquitto Active Running
Emoncms Version low-write 9.9.8
Modules Administration : App v1.2.1 : Backup v1.1.6 : EmonHub Config v1.1.0 : Dashboard v1.3.3 : Device v1.2.1 : EventProcesses : Feed : Graph v1.2.3 : Input : oldgraph : postprocess : CoreProcess : Schedule : Network Setup v1.0.0 : sync : Time : User : Visualisation : WiFi v1.3.1
Git URL: GitHub - emoncms/emoncms: Web-app for processing, logging and visualising energy, temperature and other environmental data : Branch: * stable : Describe: 9.9.4-247-gd0db7a5
Server OS Linux 4.4.26-v7+
Host emonpi : emonpi : (192.168.0.244)
Date 2019-03-22 15:03:30 UTC
Uptime 15:03:30 up 7 days, 3:20, 0 users, load average: 0.34, 0.21, 0.19
HTTP Server Apache/2.4.10 (Raspbian) HTTP/1.1 CGI/1.1 80
MySQL Version 5.5.52-0+deb8u1
Host 127.0.0.1 (127.0.0.1)
Date 2019-03-22 15:03:29 (UTC 00:00‌​)
Stats Uptime: 616731 Threads: 3 Questions: 3001872 Slow queries: 0 Opens: 60 Flush tables: 1 Open tables: 53 Queries per second avg: 4.867
Redis Version 2.8.17
Host localhost:6379 (127.0.0.1)
Size
Uptime 7 days
MQTT Server Version Mosquitto 1.4.10
Host localhost:1883 (127.0.0.1)
Pi Model Raspberry Pi 3 Model B Rev 1.2 - 1 GB (Sony UK)
SoC Broadcom BCM2709
Serial num. 2DF3C9B2
Temperature CPU: 47.77°C - GPU: 47.8’C
Release emonSD-07Nov16
File-system Current: read-only - Set root file-system temporarily to read-write, (default read-only)
Memory RAM Used: 29.20% Total: 973.11 MB Used: 284.14 MB Free: 688.96 MB
Disk Mount Stats
/ Used: 64.40% Total: 3.33 GB Used: 2.14 GB Free: 1.02 GB
/boot Used: 34.75% Total: 59.95 MB Used: 20.83 MB Free: 39.12 MB
/home/pi/data Used: 13.83% Total: 3.46 GB Used: 490.44 MB Free: 2.8 GB
PHP Version 5.6.27-0+deb8u1 (Zend Version 2.6.0)
Modules apache2handler : bcmath : bz2 : calendar : Core v5.6.27-0+deb8u1 : ctype : curl : date v5.6.27-0+deb8u1 : dba : dio v0.0.4RC4 : dom v20031129 : ereg : exif v1.4 $Id: 8b0e34c10dc8a04b8e81d9d79985b2566141b03d $ : fileinfo v1.0.5 : filter v0.11.0 : ftp : gettext : hash v1.0 : iconv : json v1.3.6 : libxml : mbstring : mcrypt : mhash : mosquitto v0.3.0 : mysql v1.0 : mysqli v0.1 : openssl : pcre : PDO v1.0.4dev : pdo_mysql v1.0.2 : Phar v2.0.2 : posix : readline v5.6.27-0+deb8u1 : redis v2.2.7 : Reflection v$Id: 5f15287237d5f78d75b19c26915aa7bd83dee8b8 $ : session : shmop : SimpleXML v0.1 : soap : sockets : SPL v0.2 : standard v5.6.27-0+deb8u1 : sysvmsg : sysvsem : sysvshm : tokenizer v0.1 : wddx : xml : xmlreader v0.1 : xmlwriter v0.1 : Zend OPcache v7.0.6-devFE : zip v1.12.5 : zlib v2.0
Client Information
HTTP Browser Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:66.0) Gecko/20100101 Firefox/66.0
Screen Resolution 1920 x 1080
Window Size 1677 x 954

Any help gratefully received
Thanks

try to run all the update scripts from ~/emonpi
this fixed many issues for me