Error in startup Oralce 18c express edition

Hi, I have this error in startup oralce 18c express edition

SQL> startup force mount

ORACLE instance started.

Total System Global Area 1073741352 bytes

Fixed Size         8797736 bytes

Variable Size       687865856 bytes

Database Buffers     373293056 bytes

Redo Buffers        3784704 bytes

ORA-00205: error in identifying control file, check alert log for more info

I also get this error if I try run :

SQL> ALTER DATABASE MOUNT;

ALTER DATABASE MOUNT

*

ERROR at line 1:

ORA-00205: error in identifying control file, check alert log for more info

Can someone give me a point how to solve this error? Thanks for help.