@mayur-hotkar please now stick to this one thread.
As I mentioned in this response, there is a need to read the stickies so you know what information to provide and how to run basic troubleshooting to establish where problems broadly lie.
https://buddypress.org/support/topic/avtar/
You need to perform some basic steps to establish – again as I mentioned – whether the avatar issue is a server permissions issue rather than application issue.
You need to check whether you can correctly upload media to the WP library or whether attempting to throws a error, if it throws an error then likely your server isn’t allowing files to be written to directories, if that all works as expected, then you need to look to plugins and/or custom themes causing the problem, to check this enable a theme known to work with BP e.g twentythirteen, if avatars work then you have an issue with the theme, if they don’t start disabling any plugins that aren’t required for normal BP operation.
As for ‘Personal Chat’ that sounds like a third party plugin? We can’t really support plugin issues and in respect of this we don’t really have sufficient detail to guess at a possible reason, although JS is a likely culprit,, but changing themes and disabling plugins should establish that for you.
