solucionar error Stephan (Vemos que hay logs de errores que podrian generar un error 500 en el servidor)

Buenos días, en una revisión de Stephan me dan varios errores que no se como solucionar. Los pongo a continuación por si me podéis asesorar.

Vemos que hay logs de errores que podrian generar un error 500 en el servidor

[07-Sep-2014 19:55:04 UTC] PHP Fatal error: Out of memory (allocated 34865152) (tried to allocate 30720 bytes) in /home/consigue/public_html/tienda/wp-content/plugins/woocommerce/includes/abstracts/abstract-wc-product.php on line 1173
[07-Sep-2014 19:55:04 UTC] PHP Fatal error: Out of memory (allocated 34603008) (tried to allocate 122880 bytes) in /home/consigue/public_html/tienda/wp-content/plugins/woocommerce/includes/class-wc-post-types.php on line 324
[07-Sep-2014 19:55:04 UTC] PHP Fatal error: Out of memory (allocated 21757952) (tried to allocate 122880 bytes) in /home/consigue/public_html/tienda/wp-content/plugins/codestyling-localization/codestyling-localization.php on line 3115
[07-Sep-2014 19:55:04 UTC] PHP Fatal error: Out of memory (allocated 26476544) (tried to allocate 122880 bytes) in /home/consigue/public_html/tienda/wp-content/plugins/iwp-client/addons/post_links/post.class.php on line 140
[07-Sep-2014 19:55:04 UTC] PHP Fatal error: Out of memory (allocated 27262976) (tried to allocate 491520 bytes) in /home/consigue/public_html/tienda/wp-content/plugins/woocommerce-ajax-layered-nav/widgets/class-sod-widget-ajax-layered-nav.php on line 442
[07-Sep-2014 19:55:04 UTC] PHP Fatal error: Out of memory (allocated 32243712) (tried to allocate 122880 bytes) in /home/consigue/public_html/tienda/wp-content/plugins/woocommerce/includes/class-wc-ajax.php on line 219
[07-Sep-2014 20:01:57 UTC] PHP Fatal error: Out of memory (allocated 39059456) (tried to allocate 30720 bytes) in /home/consigue/public_html/tienda/wp-content/plugins/wysija-newsletters/core/base.php on line 465
[07-Sep-2014 20:01:57 UTC] PHP Fatal error: Out of memory (allocated 3932160) (tried to allocate 93 bytes) in /home/consigue/public_html/tienda/wp-includes/plugin.php on line 83
[07-Sep-2014 20:01:58 UTC] PHP Fatal error: Out of memory (allocated 25165824) (tried to allocate 122880 bytes) in /home/consigue/public_html/tienda/wp-content/plugins/iwp-client/backup.class.php on line 1164

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