While running the optipng command, the error "Can't back up the existing output file" was reported. Solution to the error is given.
Solution to the error, "Failed to send 300 byte long packet over fallback interface, while starting a service".
Resolution of the error Dovecot: imap Error: open (/var/mail/username) failed observed on a Postfix mail server site.
Instead of captcha, "ERROR for site owner, Invalid domain for site key" was displayed in a form. The steps for resolving the error are given.
Solution to the error while loading shared libraries, libz.so.1, while building a project in Android Studio is listed.
A website started giving the "502 Bad Gateway" error after a software update. Steps required for resolution of the error are given.
The text format of a block was PHP code and it contained PHP code with an error. This broke the website resulting in blank screen web pages, the white screen…
Resolution of the nginx 502 bad gateway error received after switching off the mobile theme on a WordPress site using the WPtouch plugin.
Resolution of the error, md5sum: no properly formatted MD5 checksum lines found, given while running the md5sum command.
Resolution of compilation error: cannot find symbol [javac] symbol : method saveAsPNG (java.lang.String, int, int).