Encoding error when running script

Question

well, I’m trying to run the script this way:

psql -U [usuario] -d [banco] -f [script]

and in the cmd appears like this:

DROP TABLE
CREATE TABLE
COMMENT
COMMENT
psql:pais.sql:282: ERROR:  character with byte sequence 0x81 in encoding "WIN1252" has no equivalent in encoding "UTF8"

in my research about what this error might be, I found these commands:

SET client_encoding TO 'UTF8';

Only this command is running when I’m already inside the psql, and it works. but to run the script (as far as my knowledge and what my research showed) I can only run it outside psql. and off psql the same encoding error.

has some change I can make in my sql file for it to run as needed?