Can't += dicts. Need to dict.copy()
Bug in master while doing daily search: https://sickrage.tv/forums/forum/help-support/bug-issue-reports/8358-unsupported-operand-type-s-for-dict-and-dict
Shouldn't be copy() but update().
Tested now, and at least the exception is gone.
Merge pull request #810 from KontiSR/dev_copy_dict_master_issue

Bug in master while doing daily search: https://sickrage.tv/forums/forum/help-support/bug-issue-reports/8358-unsupported-operand-type-s-for-dict-and-dict