gzinflate() error

I have a campaign that’s setup to run every 15 minutes.
I generate my own rss to WpeMatico and i deliver 3 posts at this time frame.
I always see a Runtime: Timeout: 300 in the status.
Instead of 3 posts only 1 succeeds.

here is the log file:

Last Log of Campaign 1677: Posts

2017-05-07 20:50.06: Trying to set ignore_user_abort = On: Success – Old value:1.
2017-05-07 20:50.06: Trying to set max_execution_time = 300: Success – Old value:300.
2017-05-07 20:50.07: Processing feed XXXXXXXXXXX.
2017-05-07 20:50.08: Checking duplicated title ‘Edition Peters-Grand Duo Concertant in E flat Op. 48 Free Sheet Music PDF Download’: No
2017-05-07 20:50.08: Checking duplicated title ‘David Burndrett-God Rest Ye Merry Gentlemen for Violin Quartet Free Sheet Music PDF Download’: No
2017-05-07 20:50.08: Checking duplicated title ‘Theodore Presser Company-Variations On “America” Free Sheet Music PDF Download’: No
2017-05-07 20:50.08: Processing item Theodore Presser Company-Variations On “America” Free Sheet Music PDF Download
2017-05-07 20:50.09: Removing: “https://www.sheetmusicplus.com/title/1913455?aff_id=479392” from content.
2017-05-07 20:50.09: Looking for images in content.
2017-05-07 20:50.09: Uploading media…https://www.sheetmusicplus.com/title/1913455?aff_id=479392
2017-05-07 20:50.09: [WARNING] Extension not allowed: https://www.pdf-sheet-music.com/wp-content/uploads/2017/05/19134553Faff_id3D479392
2017-05-07 20:50.09: [WARNING] Stripped src.
2017-05-07 20:50.09: Removing: “https://www.sheetmusicplus.com/title/1913455?aff_id=479392” from content.
2017-05-07 20:50.09: Uploading media…https://assets.sheetmusicplus.com/items/1913455/cover_images/cover-medium_large_file.png
2017-05-07 20:50.09: Uploading media=https://assets.sheetmusicplus.com/items/1913455/cover_images/cover-medium_large_file.png to imagen_dst=/home/pdfsheet/public_html/wp-content/uploads/2017/05/cover-medium_large_file.png
2017-05-07 20:50.09: https://www.pdf-sheet-music.com/wp-content/uploads/2017/05/cover-medium_large_file-486.png
2017-05-07 20:50.09: Parsing Post template.
2017-05-07 20:50.09: Assigning Auto Categories.
2017-05-07 20:50.09: Category exist: Theodore Presser Company
2017-05-07 20:50.09: [WARNING] rmdir(/home/pdfsheet/public_html/wp-content/cache/supercache/www.pdf-sheet-music.com/uncategorized/theodore-presser-company-variations-on-america-free-sheet-music-pdf-download/104739/): No such file or directory
2017-05-07 20:50.14: [WARNING] gzinflate(): data error
2017-05-07 20:50.20: [WARNING] gzinflate(): data error
2017-05-07 20:50.22: [WARNING] gzinflate(): data error
2017-05-07 20:58.24: Categories added: 4149
2017-05-07 20:58.24: Post format added: video
2017-05-07 20:58.41: Featuring Image Into Post.
2017-05-07 20:58.41: Attaching file:https://www.pdf-sheet-music.com/wp-content/uploads/2017/05/cover-medium_large_file-486.png
2017-05-07 20:58.41: [WARNING] Reached running timeout at 300 sec.
2017-05-07 20:58.41: 1 posts added
2017-05-07 20:58.41: Campaign fetched in 515 sec.