Homepage not working anymore

Hi,
Recently I faced an issue (most probably from WordPress 3.8.1) where I could not add photos/media to my posts and uploading directly didn’t work but the photo still got added to the library. I wanted to fix that and I installed a plug-in called “WP Error Fix” to try to track down the problem.

That didn’t help, I tried opening my blog today I, the homepage was messed up. It looks like this:
https://i.imgur.com/MMzLcU3.png

The jumbled up error says (got it from source):
Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 273 bytes) in /home/i2y43e6x/public_html/wp-content/plugins/wp-error-fix/application/Error/Model/handler.php on line 70

So I disabled the plugin along with all the others because of the problem. But if I remove WP Error Fix, the homepage doesn’t even try to open. It just gives a white page. I can access all the other pages fine like my “About”, “Contact”, the links pages. It’s just the homepage that doesn’t work anymore.

It’s not a theme issue since this happens to all the themes, including Twenty Fourteen with ALL plugins disabled. I don’t know where I should begin to look for troubleshooting.

One more thing, there’s now a file in my public_html called error_log which is a freaking 3.79GB in size O.o Is it safe to delete that? I can’t read that because it’s too large ??

Any help would be appreciated. My blog is https://www.scientiaweb.com

UPDATE:
I delete error_log. It creates a new one, everytime I try to open my homepage, the size increase by about a 100MB. I downloaded the log file and majority of it says:

[20-Mar-2014 18:06:24 UTC] PHP Warning:  is_dir() [<a href='function.is-dir'>function.is-dir</a>]: open_basedir restriction in effect. File(/) is not within the allowed path(s): (/home:/tmp:/usr) in /home/i2y43e6x/public_html/wp-includes/functions.php on line 1366
[20-Mar-2014 18:06:24 UTC] PHP Warning:  is_dir() [<a href='function.is-dir'>function.is-dir</a>]: open_basedir restriction in effect. File(/) is not within the allowed path(s): (/home:/tmp:/usr) in /home/i2y43e6x/public_html/wp-includes/functions.php on line 1366
[20-Mar-2014 18:06:24 UTC] PHP Warning:  is_dir() [<a href='function.is-dir'>function.is-dir</a>]: open_basedir restriction in effect. File(/) is not within the allowed path(s): (/home:/tmp:/usr) in /home/i2y43e6x/public_html/wp-includes/functions.php on line 1366
[20-Mar-2014 18:06:24 UTC] PHP Warning:  is_dir() [<a href='function.is-dir'>function.is-dir</a>]: open_basedir restriction in effect. File(/) is not within the allowed path(s): (/home:/tmp:/usr) in /home/i2y43e6x/public_html/wp-includes/functions.php on line 1366
[20-Mar-2014 18:06:24 UTC] PHP Warning:  is_dir() [<a href='function.is-dir'>function.is-dir</a>]: open_basedir restriction in effect. File(/) is not within the allowed path(s): (/home:/tmp:/usr) in /home/i2y43e6x/public_html/wp-includes/functions.php on line 1366