How do I fix these

How do I fix these errors?

40 image(s) were skipped due to an error.
Smush request timed out, You can try setting a higher value for WP_SMUSH_API_TIMEOUT.
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Smush request timed out, You can try setting a higher value for WP_SMUSH_API_TIMEOUT.
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Smush request timed out, You can try setting a higher value for WP_SMUSH_API_TIMEOUT.
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
Error posting to API: cURL error 6: Couldn't resolve host 'smushpro.wpmudev.org'
No file content sent.
Error posting to API: 500 Internal Server Error
STATS RE-CHECK IMAGES

242/275
ATTACHMENTS SMUSHED
TOTAL SAVINGS70.4 MB / 51.4%
ATTACHMENTS SUPER-SMUSHED235/275
RESIZE SAVINGS11.0 MB