Worth knowing this might not be a stuck-quota bug at all, there’s a broader documented shift: HF quietly restricted free CPU Basic access around July 2026 without an official announcement (see the “Official Community Complaint: Revert Free CPU Basic Spaces” thread, 39 upvotes), and staff have been telling users hitting this exact quota error that upgrading to PRO unlocks the quota, even for CPU-basic specifically. That’s inconsistent with the pricing page, which still lists CPU Basic as free, so the docs and actual enforcement don’t currently match.
So: it might be genuinely stuck (like the other reports here), or it might be that your account is simply past whatever new free-tier CPU-basic limit HF rolled out unannounced. Either way the fix path is the same, email website@huggingface.co with your username and Space id and ask directly whether this is a quota bug or a policy change, worth asking that explicitly since support hasn’t been consistent about which one it is.