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W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://packages.sury.org/php stretch InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B188E2B695BD4743
W: Failed to fetch https://packages.sury.org/php/dists/stretch/InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B188E2B695BD4743
W: Some index files failed to download. They have been ignored, or old ones used instead.
E: Failed to fetch https://packages.sury.org/php/pool/main/p/php7.0/php7.0-mysql_7.0.33-5+0~20190309015553.9+stretch~1.gbp4c6517_amd64.deb 404 Not Found
E: Failed to fetch https://packages.sury.org/php/pool/main/p/php7.0/php7.0-xml_7.0.33-5+0~20190309015553.9+stretch~1.gbp4c6517_amd64.deb 404 Not Found
E: Failed to fetch https://packages.sury.org/php/pool/main/p/php7.0/php7.0-json_7.0.33-5+0~20190309015553.9+stretch~1.gbp4c6517_amd64.deb 404 Not Found
E: Failed to fetch https://packages.sury.org/php/pool/main/p/php7.0/php7.0-mbstring_7.0.33-5+0~20190309015553.9+stretch~1.gbp4c6517_amd64.deb 404 Not Found
E: Failed to fetch https://packages.sury.org/php/pool/main/p/php7.0/php7.0-opcache_7.0.33-5+0~20190309015553.9+stretch~1.gbp4c6517_amd64.deb 404 Not Found
E: Failed to fetch https://packages.sury.org/php/pool/main/p/php7.0/php7.0-readline_7.0.33-5+0~20190309015553.9+stretch~1.gbp4c6517_amd64.deb 404 Not Found
E: Failed to fetch https://packages.sury.org/php/pool/main/p/php7.0/php7.0-cli_7.0.33-5+0~20190309015553.9+stretch~1.gbp4c6517_amd64.deb 404 Not Found
E: Failed to fetch https://packages.sury.org/php/pool/main/p/php7.0/libapache2-mod-php7.0_7.0.33-5+0~20190309015553.9+stretch~1.gbp4c6517_amd64.deb 404 Not Found
E: Failed to fetch https://packages.sury.org/php/pool/main/p/php7.0/php7.0-common_7.0.33-5+0~20190309015553.9+stretch~1.gbp4c6517_amd64.deb 404 Not Found
E: Failed to fetch https://packages.sury.org/php/pool/main/libg/libgd2/libgd3_2.2.5-5.1+0~20190307222942.3+stretch~1.gbp1f9ff3_amd64.deb 404 Not Found
E: Failed to fetch https://packages.sury.org/php/pool/main/p/php7.0/php7.0_7.0.33-5+0~20190309015553.9+stretch~1.gbp4c6517_all.deb 404 Not Found
E: Failed to fetch https://packages.sury.org/php/pool/main/p/php7.3/php7.3-zip_7.3.3-1+0~20190307202245.32+stretch~1.gbp32ebb2_amd64.deb 404 Not Found
E: Failed to fetch https://packages.sury.org/php/pool/main/p/php7.3/php7.3-mysql_7.3.3-1+0~20190307202245.32+stretch~1.gbp32ebb2_amd64.deb 404 Not Found
E: Failed to fetch https://packages.sury.org/php/pool/main/p/php7.3/php7.3-gd_7.3.3-1+0~20190307202245.32+stretch~1.gbp32ebb2_amd64.deb 404 Not Found
E: Failed to fetch https://packages.sury.org/php/pool/main/p/php7.3/php7.3-xml_7.3.3-1+0~20190307202245.32+stretch~1.gbp32ebb2_amd64.deb 404 Not Found
E: Failed to fetch https://packages.sury.org/php/pool/main/p/php7.3/php7.3-curl_7.3.3-1+0~20190307202245.32+stretch~1.gbp32ebb2_amd64.deb 404 Not Found
E: Failed to fetch https://packages.sury.org/php/pool/main/p/php7.3/php7.3-mbstring_7.3.3-1+0~20190307202245.32+stretch~1.gbp32ebb2_amd64.deb 404 Not Found
E: Failed to fetch https://packages.sury.org/php/pool/main/p/php7.3/php7.3-bz2_7.3.3-1+0~20190307202245.32+stretch~1.gbp32ebb2_amd64.deb 404 Not Found
E: Failed to fetch https://packages.sury.org/php/pool/main/p/php7.3/php7.3-common_7.3.3-1+0~20190307202245.32+stretch~1.gbp32ebb2_amd64.deb 404 Not Found
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
Command which failed was: " apt-get upgrade". Please try to execute it manually and attach the output to the bug report in the forum thread.
If it still doesn't work report this to the author at https://forum.sinusbot.com/threads/sinusbot-installer-script.1200/ only. Not a PN or a bad review, cause this is an error of your system not of the installer script. Line 593.