Hi @Yuriy_Klyuch, I am very sorry to hear you’re having trouble.
The description very much suggests your n8n instance ran out of memory when trying to open your execution data. Is there a chance your workflow processes a large amount of data? If so, trying to fetch this data might push your instance’s memory requirements over the available memory. In such cases, you might want to consider re-writing your workflows for example as suggested here.
I know this isn’t a great experience so please accept my apologies for the trouble this causes.
If you’d like us to take a closer look as to why your specific instance becomes unavailable, could you kindly reach out via email to [email protected]? It’d be great if you could use the email you have registered on n8n cloud with when doing so to help us identify you.
Thank you so much!