What’s the exact error? I can’t reproduce it.
Also, OCSP seems to be working fine with your certificate:
osiris@erazer ~ $ openssl ocsp -issuer lets-encrypt-x3-cross-signed.pem.txt -cert endleaf.pem -text -url http://ocsp.int-x3.letsencrypt.org
OCSP Request Data:
Version: 1 (0x0)
Requestor List:
Certificate ID:
Hash Algorithm: sha1
Issuer Name Hash: 7EE66AE7729AB3FCF8A220646C16A12D6071085D
Issuer Key Hash: A84A6A63047DDDBAE6D139B7A64565EFF3A8ECA1
Serial Number: 034E2AB3D1FBA2B4D12013BF45AA23430BAE
Request Extensions:
OCSP Nonce:
04107A44BE10FBA159CD4570D40948BE5CB3
OCSP Response Data:
OCSP Response Status: successful (0x0)
Response Type: Basic OCSP Response
Version: 1 (0x0)
Responder Id: C = US, O = Let's Encrypt, CN = Let's Encrypt Authority X3
Produced At: Apr 25 20:45:00 2020 GMT
Responses:
Certificate ID:
Hash Algorithm: sha1
Issuer Name Hash: 7EE66AE7729AB3FCF8A220646C16A12D6071085D
Issuer Key Hash: A84A6A63047DDDBAE6D139B7A64565EFF3A8ECA1
Serial Number: 034E2AB3D1FBA2B4D12013BF45AA23430BAE
Cert Status: good
This Update: Apr 25 20:00:00 2020 GMT
Next Update: May 2 20:00:00 2020 GMT
Signature Algorithm: sha256WithRSAEncryption
53:d7:a7:c3:4f:6a:22:c2:80:07:b7:ba:51:1d:67:0d:5a:49:
b3:37:77:fd:0f:3a:f3:72:b7:22:3a:4d:99:37:41:1a:1c:b5:
f9:e1:64:fb:d9:bd:86:ef:db:61:f9:ab:f8:8c:3b:41:20:44:
4c:f4:7c:d9:b0:b6:b4:9e:32:89:c8:62:5a:98:e7:62:7f:6d:
c8:1c:42:e3:22:b1:eb:53:21:d3:47:0d:51:05:7e:76:f8:b1:
0e:2f:86:69:a8:a4:cf:66:7f:eb:04:4a:11:da:40:71:f5:2a:
6c:1f:39:d5:25:35:5a:76:77:46:dd:93:a1:d9:70:3d:71:a5:
0e:f1:db:66:78:8c:7d:eb:ed:57:19:36:c4:d8:48:18:40:8c:
10:56:8c:26:3d:e9:48:01:64:2c:8d:00:ad:bb:62:73:a5:0c:
92:4c:6a:a9:78:da:ce:f5:3e:ba:fa:29:71:36:fa:08:72:a4:
48:97:e5:26:28:31:90:c0:21:89:1c:66:8a:24:1f:a1:d7:b3:
73:ce:3d:9e:61:12:15:41:98:9f:51:50:dd:ad:94:03:16:0a:
59:c5:59:1e:f4:76:01:f6:a5:f2:60:5e:e6:8c:e2:6c:6d:11:
9a:a4:77:21:d9:ca:39:64:e3:f5:0b:54:16:31:31:ff:de:26:
5d:de:0b:87
WARNING: no nonce in response
Response verify OK
endleaf.pem: good
This Update: Apr 25 20:00:00 2020 GMT
Next Update: May 2 20:00:00 2020 GMT
osiris@erazer ~ $