@rainfallnixfig thank you for your reply
i checked 2 threads you mentioned above but simple there is no final solution for this problem . why WooCommerce just wont give a official solution for this problem that i am sure many affected .
should i downgrade the version of WooCommerce to before 5.5.1 – and i think there is nothing to do with servers because before this we had no problem .
i have uploaded my files to another hosting server with direct links and now nothing works. please show me a well explained solution for this problem.