have you tried to clear system cache? You just need to hold down the power button, select power options, and choose restart. Or follow this link, they have more specific directions
https://www.nintendo.com/en-gb/Support/Nintendo-Switch/Error-Message-The-Software-Was-Closed-Because-An-Error-Occurred-hills of steel-1554419.html?srsltid=AfmBOorPUta-dWbUbp8vOK9-wq683gAl4fUbQfjwHM72552_f6pc9YQq