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The failure was caused by ",[165,170,171],{},"nuxtApp.payload.data"," being ",[165,174,175],{},"undefined"," during client-side hydration.",[178,179],"hr",{},[156,181,183],{"id":182},"impact","Impact",[185,186,187,194,197],"ul",{},[188,189,190,191,193],"li",{},"Affected routes: ",[165,192,167],{}," and other ISR paths",[188,195,196],{},"Trigger: Page reload or SPA → ISR navigation",[188,198,199],{},"Result: Runtime crash → 500 error",[178,201],{},[156,203,205],{"id":204},"root-cause","Root Cause",[161,207,208],{},"Conflicting route rules in the configuration:",[210,211,216],"pre",{"className":212,"code":213,"language":214,"meta":215,"style":215},"language-ts shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","'/**': { ssr: false }     // SPA catch-all\n'/blog/**': { isr: 3600 } // ISR requires SSR\n","ts","",[165,217,218,258],{"__ignoreMap":215},[219,220,223,227,231,233,237,240,244,247,251,254],"span",{"class":221,"line":222},"line",1,[219,224,226],{"class":225},"sMK4o","'",[219,228,230],{"class":229},"sfazB","/**",[219,232,226],{"class":225},[219,234,236],{"class":235},"sTEyZ",": ",[219,238,239],{"class":225},"{",[219,241,243],{"class":242},"swJcz"," ssr",[219,245,246],{"class":225},":",[219,248,250],{"class":249},"sfNiH"," false",[219,252,253],{"class":225}," }",[219,255,257],{"class":256},"sHwdD","     // SPA catch-all\n",[219,259,261,263,265,267,269,271,274,276,280,282],{"class":221,"line":260},2,[219,262,226],{"class":225},[219,264,167],{"class":229},[219,266,226],{"class":225},[219,268,236],{"class":235},[219,270,239],{"class":225},[219,272,273],{"class":242}," isr",[219,275,246],{"class":225},[219,277,279],{"class":278},"sbssI"," 3600",[219,281,253],{"class":225},[219,283,284],{"class":256}," // ISR requires SSR\n",[185,286,287,290,293],{},[188,288,289],{},"The SPA catch-all disabled SSR globally.",[188,291,292],{},"ISR routes expected SSR + payload.",[188,294,295,296,301],{},"Client hydration attempted to access the missing payload, leading to a crash (",[297,298,300],"a",{"href":299},"#fig-1","Figure 1",").",[161,303,304,307,312],{},[297,305],{"id":306},"fig-1",[308,309],"mermaid",{":config":310,"code":311},"config","sequenceDiagram%0A%20%20%20%20participant%20User%0A%20%20%20%20participant%20Browser%0A%20%20%20%20participant%20Nuxt%20as%20Nuxt%20App%20(Client)%0A%20%20%20%20participant%20Payload%20as%20payload.json%0A%0A%20%20%20%20User-%3E%3EBrowser%3A%20Request%20%2Fblog%2Fpost%0A%20%20%20%20Browser-%3E%3ENuxt%3A%20Load%20JS%20App%20(SPA%20mode)%0A%20%20%20%20Nuxt-%3E%3ENuxt%3A%20Start%20Hydration%0A%20%20%20%20Nuxt-%3E%3EPayload%3A%20Attempt%20to%20read%20nuxtApp.payload.data%0A%20%20%20%20Payload--xNuxt%3A%20Undefined%20(Not%20extracted)%0A%20%20%20%20Nuxt--xBrowser%3A%20500%20Internal%20Server%20Error%20(Crash)",[313,314,315],"em",{},"Figure 1: Payload extraction failure during hydration",[161,317,318,319],{},"Related upstream issue:\n",[297,320,321],{"href":321,"rel":322},"https://github.com/nuxt/nuxt/issues/34856",[323],"nofollow",[178,325],{},[156,327,329],{"id":328},"resolution","Resolution",[331,332,334],"h3",{"id":333},"option-a-official-recommended-solution-applied","Option A: Official Recommended Solution (Applied)",[336,337,338,441,463],"ol",{},[188,339,340,344,345,348,349,246,352],{},[341,342,343],"strong",{},"Explicit Route Rules",": Remove the global SPA catch-all (",[165,346,347],{},"/**: { ssr: false }",") which disables SSR globally. Instead, define explicit rendering modes for each route group in ",[165,350,351],{},"nuxt.config.ts",[210,353,355],{"className":212,"code":354,"language":214,"meta":215,"style":215},"routeRules: {\n  '/app/**': { ssr: false },\n  '/dashboard/**': { ssr: false },\n  '/blog/**': { isr: 3600 }\n}\n",[165,356,357,368,391,413,435],{"__ignoreMap":215},[219,358,359,363,365],{"class":221,"line":222},[219,360,362],{"class":361},"sBMFI","routeRules",[219,364,246],{"class":225},[219,366,367],{"class":225}," {\n",[219,369,370,373,376,378,380,382,384,386,388],{"class":221,"line":260},[219,371,372],{"class":225},"  '",[219,374,375],{"class":229},"/app/**",[219,377,226],{"class":225},[219,379,236],{"class":242},[219,381,239],{"class":225},[219,383,243],{"class":242},[219,385,246],{"class":225},[219,387,250],{"class":249},[219,389,390],{"class":225}," 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directly inside ",[165,456,457],{},".vue"," pages using the ",[165,460,461],{},"defineRouteRules"," macro.",[188,464,465,468,469,472],{},[341,466,467],{},"Re-enable Payload Extraction",": Keep ",[165,470,471],{},"payloadExtraction: true"," (default) to ensure efficient data loading and caching.",[331,474,476],{"id":475},"option-b-legacy-trick-alternative","Option B: Legacy \"Trick\" (Alternative)",[161,478,479],{},"If explicit routing is too complex, the following \"trick\" can bypass the hydration crash:",[336,481,482,515],{},[188,483,484,246,487],{},[341,485,486],{},"Disable payload extraction",[210,488,490],{"className":212,"code":489,"language":214,"meta":215,"style":215},"experimental: {\n  payloadExtraction: false\n}\n",[165,491,492,501,511],{"__ignoreMap":215},[219,493,494,497,499],{"class":221,"line":222},[219,495,496],{"class":361},"experimental",[219,498,246],{"class":225},[219,500,367],{"class":225},[219,502,503,506,508],{"class":221,"line":260},[219,504,505],{"class":361}," 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nuxtApp",[219,609,574],{"class":225},[219,611,590],{"class":235},[219,613,574],{"class":225},[219,615,596],{"class":235},[219,617,618],{"class":225}," =",[219,620,621],{"class":541}," reactive",[219,623,545],{"class":242},[219,625,626],{"class":225},"{}",[219,628,629],{"class":242},")\n",[219,631,632],{"class":221,"line":437},[219,633,634],{"class":225},"  }\n",[219,636,638,641],{"class":221,"line":637},6,[219,639,640],{"class":225},"}",[219,642,629],{"class":235},[178,644],{},[156,646,648],{"id":647},"trade-offs","Trade-offs",[161,650,651,652,574],{},"A summary of the trade-offs between the two options is detailed in ",[297,653,655],{"href":654},"#table-1","Table 1",[161,657,658],{},[297,659],{"id":660},"table-1",[662,663,664,680],"table",{},[665,666,667],"thead",{},[668,669,670,674,677],"tr",{},[671,672,673],"th",{},"Approach",[671,675,676],{},"Advantages",[671,678,679],{},"Disadvantages",[681,682,683,697],"tbody",{},[668,684,685,691,694],{},[686,687,688],"td",{},[341,689,690],{},"Option A: Official Way",[686,692,693],{},"Cleanest architecture, fully supported by Nuxt, best performance.",[686,695,696],{},"Requires explicit maintenance of route patterns.",[668,698,699,704,707],{},[686,700,701],{},[341,702,703],{},"Option B: Legacy Trick",[686,705,706],{},"Quickest fix, bypasses hydration crashes without strict routing.",[686,708,709],{},"Inlines payloads in HTML (larger responses), bypasses standard Nuxt hydration logic.",[161,711,712],{},[313,713,714],{},"Table 1: Trade-offs between official and legacy solutions",[178,716],{},[156,718,720],{"id":719},"prevention-next-steps","Prevention / Next Steps",[185,722,723,733,741],{},[188,724,725,732],{},[341,726,727,728,731],{},"Never use a global SPA (",[165,729,730],{},"ssr: false",") fallback"," if your app contains ISR or SSG routes.",[188,734,735,740],{},[341,736,737,738],{},"Use ",[165,739,461],{}," in pages for granular control over pre-rendering.",[188,742,743,746,747,749],{},[341,744,745],{},"Maintain explicit route groupings"," in ",[165,748,351],{}," for large modules.",[751,752,753],"style",{},"html pre.shiki code .sMK4o, html code.shiki .sMK4o{--shiki-light:#39ADB5;--shiki-default:#89DDFF;--shiki-dark:#89DDFF}html pre.shiki code .sfazB, html code.shiki .sfazB{--shiki-light:#91B859;--shiki-default:#C3E88D;--shiki-dark:#C3E88D}html pre.shiki code .sTEyZ, html code.shiki .sTEyZ{--shiki-light:#90A4AE;--shiki-default:#EEFFFF;--shiki-dark:#BABED8}html pre.shiki code .swJcz, html code.shiki .swJcz{--shiki-light:#E53935;--shiki-default:#F07178;--shiki-dark:#F07178}html pre.shiki code .sfNiH, html code.shiki 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