Field Mapping / Feed filters and rules / XML Errors

The plugin is great and we use it since and it’s been a vital on our business then, however we’re having issues right now.

On our Manage Feeds tab, whenever we check our Field Mappings, we encounter this kind of error “Fatal error: Allowed memory size of 1073741824 bytes exhausted (tried to allocate 20480 bytes)”, thus we ask our hosting provider to increase our memory limit to 2048MB. After increasing it, we can’t access the Field Mapping and Feed filters and rules anymore. It loads a blank page until it timed out.

As per XML file, we have this error.

This page contains the following errors:
error on line 32662 at column 11057: Extra content at the end of the document
Below is a rendering of the page up to the first error.
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We increased our memory limit to 2048MB
The version of the plugin is already updated into Version 11.8.7
But the errors still occur.

What should we do next to resolve this?