An error occurred while constructing the dns secondary Domain Name Server in redhat9.

An error occurred while constructing the dns secondary Domain Name Server under redhat9-Linux Enterprise Application-Linux server application information. For details, refer to the following. The primary dns can work normally.
Secondary dns configuration file

Zone "huing.com" IN {
Type slave;
File "slaves/huing.com. zone ";
Masters {192.168.137.100 ;};
};

Zone "137.168.192.in-addr. arpa" IN {
Type slave;
File "slaves/huing. local ";
Masters {192.168.137.100 ;};
};
Include "/etc/rndc. key ";


Configuration file of the primary dns Server:

Zone "huing.com" IN {
Type master;
File "maid. zone ";
Allow-update {none ;};
Allow-transfer {192.168.137.150 ;};
};

Zone "137.168.192.in-addr. arpa" IN {
Type master;
File "maid. local ";
Allow-update {none ;};
Allow-transfer {192.168.137.150 ;};
};

Include "/etc/rndc. key ";



On the secondary dns server, see [root @ localhost named] # cat/var/log/messages | grep named

May 6 16:54:01 localhost named [3604]: dumping master file: slaves/tmp-XXXXk2Le89: open: file not found
May 6 16:54:01 localhost named [3604]: transfer of '192. 168.192.in-addr. arpa/in' from 192.168.137.100 #53: failed while loading responses: file not found
May 6 16:54:01 localhost named [3604]: transfer of '192. 168.192.in-addr. arpa/in' from 192.168.137.100 #53: end of transfer

On the primary dns server, see [root @ localhost named] # cat/var/log/messages | grep named

May 6 16:50:10 localhost named [3214]: client 192.168.137.150 #32785: transfer of 'hinging. com/in': AXFR started
May 6 16:53:33 localhost named [3214]: client 192.168.137.150 #32786: transfer of '192. 168.192.in-addr. arpa/in': AXFR started


I don't know where the error occurred. Please give me more advice.