Starting today morning (probably my first build after the update in src/process.c), I am unable to update M-x list-packages. I keep on getting the below error.

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The below is not helping me here as this error originates in C.

(setq debug-on-message "error in process filter")

I do not know for sure if the update in process.c or some package in GNU elpa/melpa would cause this. Can you please provide me pointers to help provide good debug info? Also can that error be improved to give more info as to which file caused the "End of file during parsing" error?

Thanks.