Error 500 - Internal Server Error

[OS4World]

Hello , i am facing a problem with my server , the error came automatically so i don't know what's causing the issue.

I have 2 website's in my vps , one of them is working under apache server and other giving following error :-

Error 500 - Internal Server Error
A generic error message, given when no more specific message is suitable

But when i change the server to hiawatha , both websites are working fine. so what could be the cause of issue in apache server which giving the above error in one of my domain.

Thankyou in advance for help.

[OS4World]

Update -

Worked fine for few minutes in Hiawatha server , after that it started giving 503 error.

[MRatWork]

Check error via 'log manager'.

[OS4World]

I get this under apache error :-

https://pastebin.com/TaeSLk9z

[MRatWork]

Inform here 'sh /script/sysinfo'.

[OS4World]

Here you go :- I am using apache as of now , but don't know why its showing hiawatha in the sysinfo.

A. Control Panel:
   - Kloxo-MR: 7.0.0.c-2017062801
   - Web: hiawatha-10.6.0-f.1.mr.el7.x86_64
   - PHP: php56s - 5.6.30-2.ius.centos7 (fpm mode)
B. Plateform:
   - OS: CentOS Linux release 7.3.1611 (Core) x86_64
   - Hostname: vps94893.vps.ovh.ca
C. Services:
   1. MySQL: MariaDB-server-10.0.31-1.el7.centos.x86_64
   2. PHP:
      - Installed:
        - Branch: php56u-cli-5.6.30-2.ius.centos7.x86_64
      - Used: --PHP Branch--
      - Multiple: disable
   3. Web Used: apache
     - Hiawatha: hiawatha-10.6.0-f.1.mr.el7.x86_64
     - Lighttpd: lighttpd-1.4.45-1.el7.x86_64
     - Nginx: nginx-1.13.3-1.el7.ngx.x86_64
     - Apache: httpd24u-2.4.26-1.ius.centos7.x86_64
       - PHP Type: php-fpm_event
       - Secondary PHP: off
   4. WebCache: none
     - ATS: --uninstalled--
     - Squid: --uninstalled--
     - Varnish: --uninstalled--
   5. Dns: bind
     - Bind: bind-9.9.9-1.mr.el7.x86_64
     - DJBDns: djbdns-1.05-17.4.mr.el7.x86_64
     - NSD: nsd-4.1.16-1.el7.x86_64
     - PowerDNS: pdns-4.0.3-1.el7.MIND.x86_64
     - Yadifa: yadifa-2.2.5-1.el7.x86_64
   6. Mail: qmail-toaster-1.03-1.3.56.mr.el7.x86_64
      - pop3/imap4: courier-imap-toaster-4.1.2-1.3.20.mr.el7.x86_64
      - smtp: qmail-toaster-1.03-1.3.56.mr.el7.x86_64
      - spam: bogofilter-1.2.3-6.el7.x86_64
   7. FTP: pure-ftpd
      - pure-ftpd: pure-ftpd-1.0.42-3.el7.x86_64
   8. Stats: awstats
      - awstats: kloxomr-stats-awstats-7.6-1.mr.noarch
D. Memory:
              total        used        free      shared  buff/cache   available
Mem:           1791         306         182         108        1302        1119
Swap:             0           0           0
E. Disk Space:
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda1       9.8G  4.5G  4.9G  49% /


*** Process Time: 00:00:00:33.33218 (dd:hh:mm:ss:xxxxxx) ***

* Note: run 'sh /script/sysinfo -y' if you want run 'fix-service-list' also
        (importance after Kloxo-MR update)

[MRatWork]

Try disable pagespeed from 'web features' under target domain.

[OS4World]

As of now i have removed the domain and added it back , now uploading its files , let see the outcome of it.

[OS4World]

I am getting this in filezilla aswell :- Server sent unsorted certificate chain in violation of the TLS specifications. , though files are getting uploaded and downloaded but this warning coming everytime.

[OS4World]

Try disable pagespeed from 'web features' under target domain.

I have completely disabled pagespeed now , i still get the same error, before i have uploaded my files it was showing it works and once i started uploading files it is showing error 500 - internal server error.

Error 500 - Internal Server Error

Please provide a solution , i can't keep my website offline for much longer.

Thankyou

[LotsOfQ]

Try 'sh /script/fix-all' and then 'sh /script/restart-all'. Whenever I getting into trouble I'd tried that.

[OS4World]

Update :-

Sorted it out , checked the error log inside the domain , there found that something wrong with htaccess , removed htaccess , so now the 500 error gone.

Thanx LotsOfQ and MRatWork for help