iSymphonyV3 cxpanel module "Failed to install due to the following missing required module(s): manager"

EDIT: Thanks very much for the help, Andrew!

For others, the needed "manager" module has the name "Asterisk API" in the FreePBX web GUI.

==

I am unable to install the iSymphonyV3 (iSymphonyV3 ver. 3.1.8) module. It reports the following error:

–
Installing cxpanel
Failed to install due to the following missing required module(s):

manager

Error(s) installing cxpanel:
Failed to run installation scripts
–

However, the required User Manager module (ver. 12.0.17) is installed, enabled and working fine.

Here is the list of modules reported by amportal

[root@localhost ~]# amportal a ma list

Fetching FreePBX settings with gen_amp_conf.php..

no repos specified, using: [commercial,standard] from last GUI settings

Module Version Status
------------------- ----------------- -------------------
announcement 2.11.0.4 Enabled
areminder 2.11.6 Enabled
arimanager 12.0.3 Enabled
asteriskinfo 12.0.1 Enabled
backup 12.0.8 Enabled
blacklist 12.0.1 Enabled
bria 2.11.0.13 Enabled
broadcast 2.11.6 Enabled
builtin Enabled
callerid 2.11.0.7 Enabled
callforward 12.0.5 Enabled
calllimit 2.11.0.10 Enabled
callrecording 12.0.1.2 Enabled
callwaiting 12.0.3 Enabled
campon 2.11.0.2 Enabled
cdr 12.0.11 Enabled
certman 12.0.2 Enabled
cidlookup 2.11.1.11 Enabled
conferences 12.0.8 Enabled
conferencespro 12.0.21 Enabled
contactmanager 12.0.0beta10 Enabled
core 12.0.12 Enabled
cos 12.0.15 Enabled
customappsreg 2.11.0.2 Enabled
cxpanel Not Installed (Locally available)
dashboard 12.0.21 Enabled
daynight 2.11.0.4 Enabled
digium_phones 2.11.2.1 Enabled
digiumaddoninstaller2.11.0.4 Enabled
directory 12.0.1 Enabled
donotdisturb 12.0.3 Enabled
endpoint 12.0.0.32 Enabled
extensionroutes 12.0.7 Enabled
fax 12.0.5 Enabled
faxpro 12.0.31 Enabled
featurecodeadmin 12.0.1 Enabled
findmefollow 12.0.10 Enabled
framework 12.0.18 Enabled
freepbx_ha 12.0.2 Enabled
hotelwakeup 2.11.3 Enabled
iaxsettings 2.11.0.3 Enabled
infoservices 2.11.0.3 Enabled
ivr 2.11.0.9 Enabled
logfiles 12.0.6 Enabled
music 12.0.1 Enabled
outroutemsg 2.11.0.2 Enabled
paging 12.0.8.1 Enabled
pagingpro 12.0.2 Enabled
parking 12.0.6 Enabled
parkpro 12.0.5 Enabled
pinsets 2.11.0.8 Enabled
pinsetspro 2.11.0.9 Enabled
presencestate 12.0.16 Enabled
printextensions 2.11.0.1 Enabled
queues 12.0.13.1 Enabled
qxact_reports 2.11.0.5 Enabled
recording_report 2.11.0.9 Enabled
recordings 12.0.3 Enabled
restapi Not Installed (Locally available)
restapps Not Installed (Locally available)
restart 12.0.1 Enabled
ringgroups 12.0.2 Enabled
setcid 2.11.0.4 Enabled
sipsettings 12.0.6 Enabled
sipstation 12.0.3 Enabled
sms 12.0.17 Enabled
sng_mcu 2.11.0.3 Enabled
sysadmin 12.0.9.7 Enabled
timeconditions 12.0.6 Enabled
ttsengines 2.11.0.3 Enabled
ucp 12.0.0beta40 Enabled
userman 12.0.17 Enabled
vmblast 12.0.1 Enabled
vmnotify 2.11.0.3 Enabled
voicemail 12.0.26 Enabled
voicemail_report 2.11.0.8 Enabled
vqplus 12.0.4 Disabled
weakpasswords 12.0.2 Enabled
webcallback 2.11.0.5 Enabled
webrtc 12.0.0beta9 Enabled
xmpp 12.0.14 Enabled

Is it possible the iSymphonyV3 module should be looking for the module "userman", instead of "manager"?

Thanks,
Tim Miller Dyck