Cpanel Showing 500 Internal Server Error

Operating System & Version
centOs 7
cPanel & WHM Version


Feb 19, 2022
Lagos, Nigeria
cPanel Access Level
Website Owner
Anytime i try to access my cpanel server, it shows 500 internal server error as shown in the attached image. This happens immediatly i put in my username and password.

After browsing a lot of websites, i still could not resolve the issue. I have tried things like this -> /scripts/upcp –force, it was unsuccessful.

i also ran this code tail -f /usr/local/cpanel/logs/error_log

it shows the below logs.

[21:47] [ ~] # tail -f /usr/local/cpanel/logs/error_log
[2022-02-26 21:48:26 +0000] warn [cpaneld] The subprocess (cpanel (cpanel)) exited with an error (ID 928997033116506): The subprocess reported error number 255 when it ended. at /usr/local/cpanel/Cpanel/Server/Handlers/ line 263.
Cpanel::Server::Handlers::SubProcess::_report_subprocess_errors(Cpanel::Server::Handlers::SubProcess=HASH(0x2ec7e38)) called at /usr/local/cpanel/Cpanel/Server/Handlers/ line 238
Cpanel::Server::Handlers::SubProcess::_shutdown_failed_subprocess(Cpanel::Server::Handlers::SubProcess=HASH(0x2ec7e38)) called at /usr/local/cpanel/Cpanel/Server/Handlers/ line 82
Cpanel::Server::Handlers::SubProcess::handler(Cpanel::Server::Handlers::SubProcess=HASH(0x2ec7e38), "subprocess_name", "cpanel (cpanel)", "subprocess_read_handle", GLOB(0x2e6a588), "subprocess_write_handle", GLOB(0x2ec7ef8), "subprocess_pid_to_reap", ...) called at line 7575
cpanel::cpsrvd::cpHandler("app", "cpanel", "document", "./frontend/paper_lantern/index.html") called at line 2839
cpanel::cpsrvd::dodoc_cpaneld() called at line 2077
cpanel::cpsrvd::dodoc(HASH(0x16abd78)) called at line 1766
cpanel::cpsrvd::handle_one_connection(5) called at line 1128
cpanel::cpsrvd::script() called at line 436
[2022-02-26 21:48:26 +0000] info [cpaneld] Internal Server Error: "GET /cpsess8295528252/frontend/paper_lantern/index.html?login=1&post_login=18152355401835 HTTP/1.1" 500 Internal Error (ID 928997033116506)



Jurassic Moderator
Staff member
Oct 19, 2014
cPanel Access Level
Root Administrator
Hey there! I'm sorry to hear about this issue with the interface. I'm not seeing much information in that error log output that gives me a clue as to why this is happening. Could you submit a ticket to our team so we can take a look at the system on our end?