How to solve it is quite simple and it can happend in community version, it is a memory error, thus you can increase the following parameters eather in your config file or as passed parameters:

limit_memory_hard

limit_memory_soft

You were maybe setting a too low value for those parameters.

If you

Try first to restore the default values:

limit_memory_soft = 671088640

limit_memory_hard = 805306368

If you still experience it, increase them.

This is only for badst9_alloc error. For other lessc errors, ensure you have the right lessc version:

lessc --version │

lessc 1.4.2 (LESS Compiler) [JavaScript]

If you had a too early version, downgrade it, now you might need to remove (via psql) all assets in table ir_attachment to regenerate them.