1.0 502 Bad Gateway After the update of Linux on the web server, the website would not open in the browser. Instead the following error was displayed. 502 Bad Gateway nginx/1.14.0 2.0 Solution First we check the nginx server. $ systemctl status nginx ● nginx.service – A high performance web server and a reverse proxy …
1.0 Error While running Ubuntu 18.04.1 on a laptop, the following errors were observed. mce: hardware error cpu 0 machine check 0 bank 6 ae0000000040110a mce: hardware error tsc 0 addr ffb07540 misc 238a0000086 mce: hardware error processor 0:40651 time 1540082330 socket 0 Apic 0 microcode 24 ipmi dmi invalid offset 0 The system would …
1.0 Error While configuring a Linux server, the error Failed to fetch webpage, temporary failure resolving domain was observed. $ sudo apt-get update Err:1 … bionic InRelease Temporary failure resolving … Err:2 … bionic-updates InRelease Temporary failure resolving … … Reading package lists… Done W: Failed to fetch … Temporary failure resolving … … Also, …
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1.0 Error After updating the Drupal 7 version in a website, the following error was observed in the configuration of the Composer Manager module. Composer Manager: Composer’s install command must be run to generate the autoloader and install the required packages. The above message was followed by the status of packages managed by the Composer. …
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1.0 Error After updating the website to a new version of Drupal 7, the following error was printed on the web pages. Notice: Trying to get property of non-object in block_block_view() (line 247 of modules/block/block.module). 2.0 Resolution The error was resolved by the following steps. 2.1 Turn off block caching From the Administration menu, Select …
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1.0 Error: While configuring the Dovecot Mail Delivery Agent, the Dovecot server would not start and the following error messages were printed. $ sudo systemctl start dovecot Job for dovecot.service failed because the control process exited with error code. See “systemctl status dovecot.service” and “journalctl -xe” for details. $ systemctl status dovecot.service ● dovecot.service – …
1.0 Error While executing the dig command, the sendmsg() failed: Operation not permitted error was printed. $ dig example.com ../../../../lib/isc/unix/net.c:581: sendmsg() failed: Operation not permitted ../../../../lib/isc/unix/net.c:581: sendmsg() failed: Operation not permitted … 2.0 Solution The error was resolved after adding the following iptables rules. iptables -I OUTPUT 1 -p udp -s 127.0.0.1 -d 127.0.0.1 -j …
1.0 Error A signed APK of an Android app was built using the Android Studio. When we tried to download the signed APK to a device using the adb command, the command failed with the error, INSTALL_PARSE_FAILED_NO_CERTIFICATES. $ adb install app-release.apk app-release.apk: 1 file pushed. 6.5 MB/s (5878675 bytes in 0.868s) pkg: /data/local/tmp/app-release.apk Failure [INSTALL_PARSE_FAILED_NO_CERTIFICATES] …
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1.0 Error While trying to open sitemap.xml of a site served by nginx and built using Drupal CMS, the 404 Not Found error was received. The nginx log file, error.log gave the error as, 80 open() sitemap.xml failed (2: No such file or directory). 2.0 Solution The error was resolved by adding the following lines …
1.0 Error While running optipng on a png file, the following error was obtained, Error: Can’t back up the existing output file 2.0 Solution The file was not having the write permission. Once, the write mode bit for the file was set, optipng worked fine. $ ls -ls abc.png 84 -r–r–r– 1 alice dev 82981 …
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