guide webpage needs updating:: nosync

[gaming-hacker (G Alexander)]

​https://guide.macports.org/

it states

selfupdate --nosync

when running, results in

Warning: port selfupdate --nosync is deprecated, use --no-sync instead

then after updating to 2.53, errors with

sqlite error: attempt to write a readonly database (8) while executing query: ALTER TABLE registry.ports ADD COLUMN cxx_stdlib TEXT
    while executing
"registry::open $db_path"
    (procedure "mportinit" line 666)
    invoked from within
"mportinit ui_options global_options global_variations"
Error: /opt/local/bin/port: Failed to initialize MacPorts, sqlite error: attempt to write a readonly database (8) while executing query: ALTER TABLE registry.ports ADD COLUMN cxx_stdlib TEXT