Dashboard empty, overview graphs not showing

Since librenms 1.47 I’ve got multiple Problems:
1. Dashboard shows up empty


Browser console reports TypeError

TypeError: data.responseJSON is undefined[Weitere Informationen] librenms:1030:17
error
https://HOSTNAME/librenms/:1030:17
c
https://HOSTNAME/librenms/js/jquery.min.js:4:26031
fireWith
https://HOSTNAME/librenms/js/jquery.min.js:4:26840
k
https://HOSTNAME/librenms/js/jquery.min.js:6:14281
r
https://HOSTNAME/librenms/js/jquery.min.js:6:18646

No further errors in apache log or anywhere else

2. Syslog/Eventlog Page empty, console reports SyntaxError

VM2017:1 Uncaught SyntaxError: Unexpected token U in JSON at position 0
    at JSON.parse (<anonymous>)
    at Function.parseJSON (jquery.min.js:4)
    at Object.success (jquery.bootgrid.min.js:6)
    at c (jquery.min.js:4)
    at Object.fireWith [as resolveWith] (jquery.min.js:4)
    at k (jquery.min.js:6)
    at XMLHttpRequest.r (jquery.min.js:6)

3. Device Overview Graphs not rendering
(can’t insert another screenshot image due to “new user” limitation :roll_eyes:)
But any other graph is working fine.
graph.php debug output over here: SQL[SELECT `devices`.*, `location`, `lat`, `lng` FROM `devices` LEFT JOIN locati - Pastebin.com

====================================
Component | Version
--------- | -------
LibreNMS  | 1.47-14-g114b3b3
DB Schema | 278
PHP       | 7.0.32-0ubuntu0.16.04.1
MySQL     | 10.0.36-MariaDB-0ubuntu0.16.04.1
RRDTool   | 1.5.5
SNMP      | NET-SNMP 5.7.3
====================================

[OK]    Composer Version: 1.8.0
[OK]    Dependencies up-to-date.
[OK]    Database connection successful
[OK]    Database schema correct

I’ve even done a complete reinstall of librenms but the same errors are showing up.
Any help is greatly appreciated.

Can you check the responses in the Network tab of web dev tools? Also check logs/librenms.log

Response Code for all elements on affected pages is 200.
librenms.log only shows poller messages:

/opt/librenms/poller.php 6 2019-01-07 16:35:21 - 1 devices polled in 4.936 secs
/opt/librenms/poller.php 10 2019-01-07 16:35:21 - 1 devices polled in 3.084 secs
/opt/librenms/poller.php 7 2019-01-07 16:35:21 - 1 devices polled in 5.182 secs
/opt/librenms/poller.php 12 2019-01-07 16:35:21 - 1 devices polled in 5.216 secs
/opt/librenms/poller.php 61 2019-01-07 16:35:21 - 1 devices polled in 4.520 secs
/opt/librenms/poller.php 13 2019-01-07 16:35:21 - 1 devices polled in 4.475 secs
/opt/librenms/poller.php 29 2019-01-07 16:35:22 - 1 devices polled in 4.578 secs
/opt/librenms/poller.php 5 2019-01-07 16:35:22 - 1 devices polled in 4.583 secs
/opt/librenms/poller.php 69 2019-01-07 16:35:22 - 1 devices polled in 4.783 secs
/opt/librenms/poller.php 28 2019-01-07 16:35:22 - 1 devices polled in 4.149 secs
/opt/librenms/poller.php 56 2019-01-07 16:35:22 - 1 devices polled in 4.235 secs
/opt/librenms/poller.php 9 2019-01-07 16:35:22 - 1 devices polled in 4.461 secs

got this solved by removing a trailing slash from

$config[‘base_url’] = “/librenms”;