Personal web site is visible but mango management is not visible

[etantonio]

It seems no header available, just a @Game over@

[phildunlap]

Try Chrome. You can check the "Preserve log" checkbox (see my screenshot) and it will definitely keep the request in view of the network tab. You have to have the developer tools open before you request the page.

[etantonio]

This is the result

[phildunlap]

@phildunlap said

But, I really would have expected some output to stderr or stdout from a 500 exception. There are no errors in your log file?

Have you checked your Mango/logs/ma.log or perhaps Mango/bin/logs/ma.log file?

What does the response tab display? Please copy the whole content of the request and the response, rather than a cropped image.

[etantonio]

Hy,
in ma.log there's nothing concerning this request.
following there's all coming from network tab of Chrome developer network tool,
thanks for your help,
Antonio

Request URL:http://xxxx:yyyy/
Request Method:GET
Status Code:500 Server Error
Remote Address:xxxx:yyyy
Response Headers
view parsed
HTTP/1.1 500 Server Error
Date: Thu, 27 Sep 2018 16:17:16 GMT
Connection: close
Request Headers
view parsed
GET / HTTP/1.1
Host: xxxx:yyyy
Connection: keep-alive
Cache-Control: max-age=0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,/;q=0.8
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.112 Safari/537.36
Accept-Encoding: gzip, deflate, sdch
Accept-Language: it-IT,it;q=0.8,en-US;q=0.6,en;q=0.4
Cookie: XSRF-TOKEN=94a6236e-1520-43c4-b399-f59c2801c8a7; MANGO8800=jhmtbh78rpo2pc2zrb31aift

[phildunlap]

The 500 error would be in your log. If not, you can try launching at the command line (navigate to the Mango/bin directory and start with either ./ma.sh start or ma-start.bat and try to load the page again. If that 500 error is from Mango, there absolutely will be some output.

With nothing but an unknown 500 error, my advise would be to attempt reinstalling and to ensure you are not accessing over a proxy. There is very likely some error output.

[etantonio]

it is really strange,
for example if instead of http://server:port/login.htm
is required the page http://server:port/data_point_details.shtm

in ma.log I've just the log:

WARN 2018-10-02 15:14:32,049 (com.serotonin.m2m2.web.filter.UrlSecurityFilter.doFilter:95) - Denying access to page where user isn't logged in, uri=/data_point_details.shtm, remote host ip= 95.243.234.182
WARN 2018-10-02 15:14:32,050 (com.serotonin.m2m2.web.filter.LoggedInFilter.doFilter:55) - Denying access to secure page for session id 13gvqk69w3vpso64apcqdpzpy, uri=/data_point_details.shtm

On the ubuntu virtual desktop 18.04 I've nothing neither in syslog or ufw.log

If I request the url during mango startup this is the result

Any other idea?

And also, there's a way to bypass the problem considering that

http://server:port/user-dashboards/solergy/login

is working fine?

Thanks
Antonio

[phildunlap]

I keep asking about proxies. Like, were it behind Apache...

And also, there's a way to bypass the problem considering that

Yes, you can make Graphical Views public or dashboards in the old Dashboards module, and you could make a proxy only forward a subset of urls.

If you were launched at the command line, had no proxy in the way, and received a 500 response in 2.8.4, I will not believe nothing is logged until I see it, and wouldn't look until I am confident you have attempted my suggestions, such as starting a clean installation on a clean database (but I've never seen any sort of corruption there cause what you're describing, and certainly not without logs).

[etantonio]

Finally problem solved, naturally it was due to my mistake,
installed on Ubuntu 18.04 openjdk instead of jre1.8, and, it seems, but is not the same thing.
Thanks for your help.
Antonio

[phildunlap]

Still weird to me that wouldn't produce errors if you launched at the command line!

Thanks for sharing the resolution.