In regards to this thread [Issue Encountered], I've tested for approximately a month now without any issues further, and, i found that the extension manager
is less suitable to be implemented and utilised via my current hosting environment due to the security configuration at server side. *I have an option to probably overide those security rule-set but however decided not to do that at least for now as i have an alternative which is the default command line
method.
In regards to the residues [Corrupted Packages of Extensions] that occur during the previous initiate attempt via the Extension Manager was eliminated and resolved by initiating the chown
command followed by the attempt of removal again via the command line as per guided by @ernestdefoe , thanks man @ernestdefoe
Whereas, The error encountered during the attempt to update the CSS was resolved by ammending the code in such by simplifying and implementing some clarity on it to serve the exact same function as previous.
*In fact, i use the exact same code previously as per the one i re-attempted to update as it was removed to check the extension manager issue but however re-updating it didn't work and it was somehow weird. Somehow, i realise that the current added code works better on my flarum rather than the previous one as it has significantly [slightly] improved the loadspeed of the site [even when i do not implement css minification] compared to the previous code [based on my own perspective as well as results gathered from the web load speed tests].