When i activate theme theGEm in my wordpress then site crashed showing error when i check error log found error in two plugins i have rename them site open .when i again activate them then again crashed 

I go to error log found error increase memory to 512mb but still not working 

I have using bluehost vps server 

i have adding error details of error log in public_html please help me out else have surrender this theme need refund as your policy 7 day return

19-Sep-2019 13:32:29 UTC] PHP Fatal error:  Allowed memory size of 41943040 bytes exhausted (tried to allocate 524288 bytes) in /home/dawaaiwala/public_html/wp-content/themes/Dawaaiwala/inc/options.php on line 2084 [19-Sep-2019 13:32:35 UTC] PHP Fatal error:  Allowed memory size of 41943040 bytes exhausted (tried to allocate 524288 bytes) in /home/dawaaiwala/public_html/wp-content/themes/Dawaaiwala/inc/options.php on line 2084 [19-Sep-2019 14:11:06 UTC] PHP Fatal error:  Allowed memory size of 41943040 bytes exhausted (tried to allocate 524288 bytes) in /home/dawaaiwala/public_html/wp-content/themes/Dawaaiwala/inc/options.php on line 2084 [19-Sep-2019 14:13:06 UTC] PHP Fatal error:  Allowed memory size of 41943040 bytes exhausted (tried to allocate 524288 bytes) in /home/dawaaiwala/public_html/wp-content/themes/Dawaaiwala/inc/options.php on line 2084 [19-Sep-2019 14:13:07 UTC] PHP Fatal error:  Allowed memory size of 41943040 bytes exhausted (tried to allocate 524288 bytes) in /home/dawaaiwala/public_html/wp-content/themes/Dawaaiwala/inc/options.php on line 2084 [19-Sep-2019 14:13:11 UTC] PHP Fatal error:  Allowed memory size of 41943040 bytes exhausted (tried to allocate 524288 bytes) in /home/dawaaiwala/public_html/wp-content/themes/Dawaaiwala/inc/options.php on line 2084 [19-Sep-2019 14:16:24 UTC] PHP Fatal error:  Allowed memory size of 41943040 bytes exhausted (tried to allocate 524288 bytes) in /home/dawaaiwala/public_html/wp-content/themes/Dawaaiwala/inc/options.php on line 2084 [19-Sep-2019 14:16:29 UTC] PHP Fatal error:  Allowed memory size of 41943040 bytes exhausted (tried to allocate 524288 bytes) in /home/dawaaiwala/public_html/wp-content/themes/Dawaaiwala/inc/options.php on line 2084 [19-Sep-2019 14:16:42 UTC] PHP Fatal error:  Allowed memory size of 41943040 bytes exhausted (tried to allocate 77824 bytes) in /home/dawaaiwala/public_html/wp-content/plugins/js_composer/include/params/google_fonts/google_fonts.php on line 33 [19-Sep-2019 14:16:42 UTC] PHP Fatal error:  Allowed memory size of 41943040 bytes exhausted (tried to allocate 12288 bytes) in /home/dawaaiwala/public_html/wp-content/plugins/js_composer/include/params/loop/loop.php on line 199 [19-Sep-2019 14:17:40 UTC] PHP Fatal error:  Allowed memory size of 41943040 bytes exhausted (tried to allocate 8192 bytes) in /home/dawaaiwala/public_html/wp-content/plugins/js_composer/include/params/animation_style/animation_style.php on line 90 [19-Sep-2019 14:17:53 UTC] PHP Fatal error:  Allowed memory size of 41943040 bytes exhausted (tried to allocate 77824 bytes) in /home/dawaaiwala/public_html/wp-content/plugins/js_composer/include/params/google_fonts/google_fonts.php on line 33 [19-Sep-2019 14:17:53 UTC] PHP Fatal error:  Allowed memory size of 41943040 bytes exhausted (tried to allocate 12288 bytes) in /home/dawaaiwala/public_html/wp-content/plugins/js_composer/include/params/loop/loop.php on line 199 [19-Sep-2019 14:18:26 UTC] PHP Fatal error:  Uncaught Error: Call to a member function vc() on null in /home/dawaaiwala/public_html/wp-content/plugins/thegem-elements/inc/shortcodes/shortcodes.php:10439 Stack trace: #0 /home/dawaaiwala/public_html/wp-includes/class-wp-hook.php(286): thegem_VC_init('') #1 /home/dawaaiwala/public_html/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array) #2 /home/dawaaiwala/public_html/wp-includes/plugin.php(465): WP_Hook->do_action(Array) #3 /home/dawaaiwala/public_html/wp-settings.php(525): do_action('init') #4 /home/dawaaiwala/public_html/wp-config.php(90): require_once('/home/dawaaiwal...') #5 /home/dawaaiwala/public_html/wp-load.php(37): require_once('/home/dawaaiwal...') #6 /home/dawaaiwala/public_html/wp-blog-header.php(13): require_once('/home/dawaaiwal...') #7 /home/dawaaiwala/public_html/index.php(17): require('/home/dawaaiwal...') #8 {main}   thrown in /home/dawaaiwala/public_html/wp-content/plugins/thegem-elements/inc/shortcodes/shortcodes.php on line 10439 [19-Sep-2019 14:18:34 UTC] PHP Fatal error:  Uncaught Error: Call to a member function vc() on null in /home/dawaaiwala/public_html/wp-content/plugins/thegem-elements/inc/shortcodes/shortcodes.php:10439 Stack trace: #0 /home/dawaaiwala/public_html/wp-includes/class-wp-hook.php(286): thegem_VC_init('') #1 /home/dawaaiwala/public_html/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array) #2 /home/dawaaiwala/public_html/wp-includes/plugin.php(465): WP_Hook->do_action(Array) #3 /home/dawaaiwala/public_html/wp-settings.php(525): do_action('init') #4 /home/dawaaiwala/public_html/wp-config.php(90): require_once('/home/dawaaiwal...') #5 /home/dawaaiwala/public_html/wp-load.php(37): require_once('/home/dawaaiwal...') #6 /home/dawaaiwala/public_html/wp-blog-header.php(13): require_once('/home/dawaaiwal...') #7 /home/dawaaiwala/public_html/index.php(17): require('/home/dawaaiwal...') #8 {main}   thrown in /home/dawaaiwala/public_html/wp-content/plugins/thegem-elements/inc/shortcodes/shortcodes.php on line 10439 [19-Sep-2019 14:19:36 UTC] PHP Fatal error:  Allowed memory size of 41943040 bytes exhausted (tried to allocate 8192 bytes) in /home/dawaaiwala/public_html/wp-content/plugins/js_composer/include/params/animation_style/animation_style.php on line 90 [19-Sep-2019 14:19:37 UTC] PHP Fatal error:  Allowed memory size of 41943040 bytes exhausted (tried to allocate 12288 bytes) in /home/dawaaiwala/public_html/wp-content/plugins/js_composer/include/params/animation_style/animation_style.php on line 40 [19-Sep-2019 14:20:05 UTC] PHP Fatal error:  Allowed memory size of 41943040 bytes exhausted (tried to allocate 12288 bytes) in /home/dawaaiwala/public_html/wp-content/plugins/js_composer/include/params/animation_style/animation_style.php on line 40 [19-Sep-2019 14:20:06 UTC] PHP Fatal error:  Allowed memory size of 41943040 bytes exhausted (tried to allocate 8192 bytes) in /home/dawaaiwala/public_html/wp-content/plugins/js_composer/include/params/animation_style/animation_style.php on line 90 [19-Sep-2019 14:22:01 UTC] PHP Fatal error:  Uncaught Error: Call to a member function vc() on null in /home/dawaaiwala/public_html/wp-content/plugins/thegem-elements/inc/shortcodes/shortcodes.php:10439 Stack trace: #0 /home/dawaaiwala/public_html/wp-includes/class-wp-hook.php(286): thegem_VC_init('') #1 /home/dawaaiwala/public_html/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array) #2 /home/dawaaiwala/public_html/wp-includes/plugin.php(465): WP_Hook->do_action(Array) #3 /home/dawaaiwala/public_html/wp-settings.php(525): do_action('init') #4 /home/dawaaiwala/public_html/wp-config.php(90): require_once('/home/dawaaiwal...') #5 /home/dawaaiwala/public_html/wp-load.php(37): require_once('/home/dawaaiwal...') #6 /home/dawaaiwala/public_html/wp-blog-header.php(13): require_once('/home/dawaaiwal...') #7 /home/dawaaiwala/public_html/index.php(17): require('/home/dawaaiwal...') #8 {main}   thrown in /home/dawaaiwala/public_html/wp-content/plugins/thegem-elements/inc/shortcodes/shortcodes.php on line 10439 [19-Sep-2019 14:22:05 UTC] PHP Fatal error:  Uncaught Error: Call to a member function vc() on null in /home/dawaaiwala/public_html/wp-content/plugins/thegem-elements/inc/shortcodes/shortcodes.php:10439 Stack trace: #0 /home/dawaaiwala/public_html/wp-includes/class-wp-hook.php(286): thegem_VC_init('') #1 /home/dawaaiwala/public_html/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array) #2 /home/dawaaiwala/public_html/wp-includes/plugin.php(465): WP_Hook->do_action(Array) #3 /home/dawaaiwala/public_html/wp-settings.php(525): do_action('init') #4 /home/dawaaiwala/public_html/wp-config.php(90): require_once('/home/dawaaiwal...') #5 /home/dawaaiwala/public_html/wp-load.php(37): require_once('/home/dawaaiwal...') #6 /home/dawaaiwala/public_html/wp-blog-header.php(13): require_once('/home/dawaaiwal...') #7 /home/dawaaiwala/public_html/index.php(17): require('/home/dawaaiwal...') #8 {main}   thrown in /home/dawaaiwala/public_html/wp-content/plugins/thegem-elements/inc/shortcodes/shortcodes.php on line 10439 [19-Sep-2019 14:22:10 UTC] PHP Fatal error:  Uncaught Error: Call to a member function vc() on null in /home/dawaaiwala/public_html/wp-content/plugins/thegem-elements/inc/shortcodes/shortcodes.php:10439 Stack trace: #0 /home/dawaaiwala/public_html/wp-includes/class-wp-hook.php(286): thegem_VC_init('') #1 /home/dawaaiwala/public_html/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array) #2 /home/dawaaiwala/public_html/wp-includes/plugin.php(465): WP_Hook->do_action(Array) #3 /home/dawaaiwala/public_html/wp-settings.php(525): do_action('init') #4 /home/dawaaiwala/public_html/wp-config.php(90): require_once('/home/dawaaiwal...') #5 /home/dawaaiwala/public_html/wp-load.php(37): require_once('/home/dawaaiwal...') #6 /home/dawaaiwala/public_html/wp-blog-header.php(13): require_once('/home/dawaaiwal...') #7 /home/dawaaiwala/public_html/index.php(17): require('/home/dawaaiwal...') #8 {main}   thrown in /home/dawaaiwala/public_html/wp-content/plugins/thegem-elements/inc/shortcodes/shortcodes.php on line 10439 [19-Sep-2019 14:30:35 UTC] PHP Fatal error:  Allowed memory size of 41943040 bytes exhausted (tried to allocate 8192 bytes) in /home/dawaaiwala/public_html/wp-includes/class-wp-xmlrpc-server.php on line 2400