Unable to access confluence

[Raju]

Hello,

I am unable to access confluence page it was showing below error.

BootstrapException: Unable to bootstrap application: Failed to parse config file: Error on line 1 of document : Content is not allowed in prolog. Nested exception: Content is not allowed in prolog.

please help me in resolving this error

[Nic Brough -Adaptavist- · Accepted solution]

This means one of the configuration files you have is not in the right format. 

Most of the time, this error will happen when there is a broken file that is of xml, so I would look for xml files in the installation that you've edited to start with.  The most likely one is the server.xml file in <install>/conf - that's where most customisation is done to most confluence systems