Tive esse erro depois de criar o arquivo data.sql:

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2021-06-02 20:27:46.819 ERROR 9252 --- [ restartedMain] o.s.boot.SpringApplication : Application run failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSourceScriptDatabaseInitializer' defined in class path resource [org/springframework/boot/autoconfigure/sql/init/DataSourceInitializationConfiguration.class]: Invocation of init method failed; nested exception is org.springframework.jdbc.datasource.init.ScriptStatementFailedException: Failed to execute SQL script statement #1 of URL [file:/C:/Users/debor/Desktop/forum2021/target/classes/data.sql]: INSERT INTO USUARIO(nome, email, senha) VALUES('Aluno', 'aluno@email.com', '123456'); nested exception is org.h2.jdbc.JdbcSQLSyntaxErrorException: Table "USUARIO" not found; SQL statement: INSERT INTO USUARIO(nome, email, senha) VALUES('Aluno', 'aluno@email.com', '123456') [42102-200]