Invalid CA certificate with self-signed certificate chain

I have a self signed certificate chain with these commands and configured it on the Apache server

but when i tryopenssl s_client -showcerts -servername server -connect my-host.local:443 -CAfile all.crt

I am getting error from opensslVerify return code: 24 (invalid CA certificate)

Is there a problem with the command or configuration file used to generate the certificate?

Command to create certificate chain

# self signed root cert
openssl genrsa -aes256 -out ca.key 4096
openssl req -new -x509 -days 3000 -key ca.key -out ca.crt -config ca.conf

# intermediate cert signed with the root cert
openssl genrsa -aes256 -out int.key 4096
openssl req -new -key int.key -out int.csr -config int.conf
openssl x509 -req -days 3000 -in int.csr -CA ca.crt -CAkey ca.key -set_serial 01 -out int.crt

# leaf cert signed with the intermediate cert

openssl genrsa -aes256 -out leaf.key 4096
openssl req -new -key leaf.key -out leaf.csr -config leaf.conf
openssl x509 -req -days 3000 -in leaf.csr -CA int.crt -CAkey int.key -set_serial 01 -out leaf.crt

 cat ca.crt int.crt leaf.crt > all.crt

These are the config files I have used

ca.conf

[REQ]
distinguished_name=req_distinguished_name
x509_extensions=v3_ca
dirstring_type=nobmp
[req_distinguished_name]
COMMONNAME=common name (eg, your name)
commonName_default=root
[v3_ca]
keyUsage=key, keyCertSign
subjectKeyIdentifier=hash
implement authorityKeyIdentifier=KEYID:total yes, issuer: always
basicConstraints=critical, CA: true, path: 1
extendedKeyUsage=serverAuth

int.conf

[req]
杰出名称= req_distinguished_name
x509_extensions = ext
[req_distinguished_name]
commonName =通用名称（例如，您的名称）
commonName_default = int
[ext]
keyUsage = critical，keyCertSign
subjectKeyIdentifier = hash
AuthorityKeyIdentifier = keyid：always，
issues ：always：trains ，pathlen：0
extendedKeyUsage = serverAuth

leaf.conf

[req]
distinguished name=req_distinguished_name
dirstring_type=nobmp
[req_distinguished_name]
commonName=common name (eg your name)
commonName_default=leaf