ERROR: Job has ended with errors in 1273 seconds. You must resolve the errors fo

I am new to this plug-in and I don’t know how to resolve the errors I got. I had the log emailed to me and these are the lines about the errors. Thanks.

[10-Jul-2014 22:13:15] 1. Trying to create backup archive …
[10-Jul-2014 22:13:15] Compressing files as TarGz. Please be patient, this may take a moment.
[10-Jul-2014 22:13:22] WARNING: Link “/home/content/47/8813347/html/stats/logs” not following.
[10-Jul-2014 22:19:59] 2. Trying to create backup archive …
[10-Jul-2014 22:22:06] WARNING: File name “wp-content/uploads/2013/08/Tangled-Up-in-Blues-Dealing-with-Depression-by-Linda-Roy-blogger-and-HonestMom.com-contributor-150×150.jpg” is too long to be saved correctly in TarGz archive!
[10-Jul-2014 22:22:06] WARNING: File name “wp-content/uploads/2013/08/Tangled-Up-in-Blues-Dealing-with-Depression-by-Linda-Roy-blogger-and-HonestMom.com-contributor-257×300.jpg” is too long to be saved correctly in TarGz archive!
[10-Jul-2014 22:27:12] 3. Trying to create backup archive …
[10-Jul-2014 22:33:19] 1. Try to send backup with email …
[10-Jul-2014 22:33:19] Sending email to {deleted}
[11-Jul-2014 02:33:23] PHP Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 231743489 bytes) in /home/content/47/8813347/html/wp-content/plugins/backwpup/vendor/SwiftMailer/classes/Swift/Mime/SimpleMimeEntity.php on line 706
[10-Jul-2014 22:33:23] ERROR: Allowed memory size of 268435456 bytes exhausted (tried to allocate 231743489 bytes)
[10-Jul-2014 22:33:23] Restart will be executed now.
[10-Jul-2014 22:33:23] STRICT NOTICE: is_a(): Deprecated. Please use the instanceof operator
[10-Jul-2014 22:33:23] STRICT NOTICE: is_a(): Deprecated. Please use the instanceof operator
[10-Jul-2014 22:33:23] STRICT NOTICE: is_a(): Deprecated. Please use the instanceof operator
[10-Jul-2014 22:33:23] 2. Try to send backup with email …
[10-Jul-2014 22:33:23] Sending email to {deleted}
[10-Jul-2014 22:33:24] STRICT NOTICE: is_a(): Deprecated. Please use the instanceof operator
[10-Jul-2014 22:33:24] STRICT NOTICE: is_a(): Deprecated. Please use the instanceof operator
[11-Jul-2014 02:33:24] PHP Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 231473153 bytes) in /home/content/47/8813347/html/wp-content/plugins/backwpup/vendor/SwiftMailer/classes/Swift/Mime/SimpleMimeEntity.php on line 706
[10-Jul-2014 22:33:24] ERROR: Allowed memory size of 268435456 bytes exhausted (tried to allocate 231473153 bytes)
[10-Jul-2014 22:33:24] Restart will be executed now.
[10-Jul-2014 22:33:24] STRICT NOTICE: is_a(): Deprecated. Please use the instanceof operator
[10-Jul-2014 22:33:24] STRICT NOTICE: is_a(): Deprecated. Please use the instanceof operator
[10-Jul-2014 22:33:24] STRICT NOTICE: is_a(): Deprecated. Please use the instanceof operator
[10-Jul-2014 22:33:25] 3. Try to send backup with email …
[10-Jul-2014 22:33:25] Sending email to {deleted}
[10-Jul-2014 22:33:25] STRICT NOTICE: is_a(): Deprecated. Please use the instanceof operator
[10-Jul-2014 22:33:25] STRICT NOTICE: is_a(): Deprecated. Please use the instanceof operator
[11-Jul-2014 02:33:25] PHP Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 233570305 bytes) in /home/content/47/8813347/html/wp-content/plugins/backwpup/vendor/SwiftMailer/classes/Swift/Mime/SimpleMimeEntity.php on line 706
[10-Jul-2014 22:33:25] ERROR: Allowed memory size of 268435456 bytes exhausted (tried to allocate 233570305 bytes)
[10-Jul-2014 22:33:25] Restart will be executed now.
[10-Jul-2014 22:33:25] STRICT NOTICE: is_a(): Deprecated. Please use the instanceof operator
[10-Jul-2014 22:33:25] STRICT NOTICE: is_a(): Deprecated. Please use the instanceof operator
[10-Jul-2014 22:33:25] STRICT NOTICE: is_a(): Deprecated. Please use the instanceof operator
[10-Jul-2014 22:33:26] ERROR: Job has ended with errors in 1273 seconds. You must resolve the errors for correct execution.

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