MODX 3 — can't install MIGX

I have currently installed ModX 3.0.3, MIGX 3.0.0-alpha5 (installed from the modx package browser), and Lingua 3.0.3 (which requires MIGX)

Lingua gives me two errors (see below) which I guess are caused by MIGX (they seem to be very similar to those MODX 3.0.3 and MIGX error )

This brings me to my two questions:

  1. How can I upgrade to MIGX 3.0.1-beta2 (if I just upload the package manually it will not recognize that I have already installed MIGX from the package browser)
  2. Do you have any idea how to fix those errors?
[2023-08-16 12:24:04] (ERROR @ /www/xxx/core/vendor/xpdo/xpdo/src/xPDO/xPDO.php : 667) Could not load class: Lingua from lingua
[2023-08-16 12:24:04] (ERROR @ /www/xxx/core/vendor/xpdo/xpdo/src/xPDO/xPDO.php : 1273) Problem getting service lingua, instance of class Lingua, from path ```