self signing a cert with authroty and error .srl: No such file or directory

openssl x509 -sha256 -req -in avantastech.req -CA authority.example.com.crt -CAkey trust.key  -extensions server -days 1365 -outform PEM -out avantastech.crt
Signature ok
subject=your certificate subject
Getting CA Private Key
authority.srl: No such file or directory
140486363838352:error:06067099:digital envelope routines:EVP_PKEY_copy_parameters:different parameters:p_lib.c:137:
140486363838352:error:02001002:system library:fopen:No such file or directory:bss_file.c:402:fopen('authority.srl','r')
140486363838352:error:20074002:BIO routines:FILE_CTRL:system lib:bss_file.c:404:

Solution:
to fix this issue

I have included -CAcreateserial -CAserial authority.seq because when i have created authority.seq i dont know what sequence number i can use



openssl x509 -sha256 -req -in avantastech.req -CA authority.com.crt -CAkey trust.key  -extensions server -days 1365 -outform PEM -out avantastech.crt -CAcreateserial -CAserial authrority.seq


and it worked