bash-5.2$ createdb arsad
Password:
WARNING:  database "postgres" has a collation version mismatch
DETAIL:  The database was created using collation version 2.38, but the operating system provides version 2.41.
HINT:  Rebuild all objects in this database that use the default collation and run ALTER DATABASE postgres REFRESH COLLATION VERSION, or build PostgreSQL with the right library version.
createdb: error: database creation failed: ERROR:  template database "template1" has a collation version mismatch
DETAIL:  The template database was created using collation version 2.38, but the operating system provides version 2.41.
HINT:  Rebuild all objects in the template database that use the default collation and run ALTER DATABASE template1 REFRESH COLLATION VERSION, or build PostgreSQL with the right library version.
bash-5.2$

解决办法：

psql

\c postgres

reindex database postgres;

alter database postgres refresh collation version;

\c template1

reindex database template1;

alter database template1 refresh collation version;

quit

参考资料：

https://blog.csdn.net/weixin_39132497/article/details/136120631