Nginx 上的 SSL 抛出错误（SSL：错误：0908F066：PEM 例程：get_header_and_data：结尾行错误）

Question

I generated my SSL from SSLforFree/ZeroSSL, and according to the steps for installation listed on their website, https://zerossl.com/help/installation/nginx/

1. Downloaded the SSL Files
2. Moved them to the Server
3. Merged the certificate.crt & ca_bundle.crt with ( cat certificate.crt ca_bundle.crt >> certificate.crt )
4. Added following lines in the hosts file of nginx:
   ssl on;
ssl_certificate /etc/ssl/certificate.crt;
ssl_certificate_key /etc/ssl/private.key;
5. Restarted Nginx Server with ( sudo service nginx restart )
6. Error received, and checked the error details by ( journalctl -xe )
7. Error was:
   nginx: [emerg] PEM_read_bio_X509_AUX
(SSL: error:0908F066:PEM routines:get_header_and_data:bad end line)

Answer 1

Merging files with cat certificate.crt ca_bundle.crt >> certificate.crt , merges the file without adding any next line character in it. After merging the files, open the newly created file, ie, certificate.crt, and you'll see the file structure as follows:
-----BEGIN CERTIFICATE-----
certificate-1-text
-----END CERTIFICATE----------BEGIN CERTIFICATE-----
certificate-2-text
-----END CERTIFICATE-----

If your certificate looks like this, you can fix this by adding adding a new line character just before 5 hyphens of second begin certificate, ie, it should look as follows after editing:
-----BEGIN CERTIFICATE-----
certificate-1-text
-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
certificate-2-text
-----END CERTIFICATE-----

Answer 2

I had the same problem. What went wrong was I had a new line in between the code before the CERTIFICATE-----. I fixed that it all worked fine. But this helped me troubleshoot. Thanks,