db.default.url="jdbc:h2:file:data/db"

Caused by: org.h2.jdbc.JdbcSQLException: A file path that is implicitly
relative to the current working directory is not allowed in the database
URL "jdbc:h2:file:data/db". Use an absolute path, ~/name, ./name, or the
baseDir setting instead. [90011-187]
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:345)
    at org.h2.message.DbException.get(DbException.java:179)
    ...

db.default.url="jdbc:h2:file:/Users/foo/data/db"

db.default.url="jdbc:h2:~/data/db"