Intermittent issues that come and go like you're describing with Destiny 1 can be a major sign that either your hardware may be having an issue or the installation was corrupted.
You can try unplugging your console for 30-60 seconds or restoring your licenses, but if that doesn't work, please reinstall the game entirely and see if the issue is fixed.
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How do I restore my licences?
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You can view details here: https://www.bungie.net/en/Help/Article/12181 .