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The failure was caused by ",[177,182,183],{},"nuxtApp.payload.data"," being ",[177,186,187],{},"undefined"," during client-side hydration.",[190,191],"hr",{},[168,193,195],{"id":194},"impact","Impact",[197,198,199,206,209],"ul",{},[200,201,202,203,205],"li",{},"Affected routes: ",[177,204,179],{}," and other ISR paths",[200,207,208],{},"Trigger: Page reload or SPA → ISR navigation",[200,210,211],{},"Result: Runtime crash → 500 error",[190,213],{},[168,215,217],{"id":216},"root-cause","Root Cause",[173,219,220],{},"Conflicting route rules in the configuration:",[222,223,228],"pre",{"className":224,"code":225,"language":226,"meta":227,"style":227},"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","",[177,229,230,270],{"__ignoreMap":227},[231,232,235,239,243,245,249,252,256,259,263,266],"span",{"class":233,"line":234},"line",1,[231,236,238],{"class":237},"sMK4o","'",[231,240,242],{"class":241},"sfazB","/**",[231,244,238],{"class":237},[231,246,248],{"class":247},"sTEyZ",": ",[231,250,251],{"class":237},"{",[231,253,255],{"class":254},"swJcz"," ssr",[231,257,258],{"class":237},":",[231,260,262],{"class":261},"sfNiH"," false",[231,264,265],{"class":237}," }",[231,267,269],{"class":268},"sHwdD","     // SPA catch-all\n",[231,271,273,275,277,279,281,283,286,288,292,294],{"class":233,"line":272},2,[231,274,238],{"class":237},[231,276,179],{"class":241},[231,278,238],{"class":237},[231,280,248],{"class":247},[231,282,251],{"class":237},[231,284,285],{"class":254}," isr",[231,287,258],{"class":237},[231,289,291],{"class":290},"sbssI"," 3600",[231,293,265],{"class":237},[231,295,296],{"class":268}," // ISR requires SSR\n",[197,298,299,302,305],{},[200,300,301],{},"The SPA catch-all disabled SSR globally.",[200,303,304],{},"ISR routes expected SSR + payload.",[200,306,307,308,313],{},"Client hydration attempted to access the missing payload, leading to a crash (",[309,310,312],"a",{"href":311},"#fig-1","Figure 1",").",[173,315,316,319,324],{},[309,317],{"id":318},"fig-1",[320,321],"mermaid",{":config":322,"code":323},"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)",[325,326,327],"em",{},"Figure 1: Payload extraction failure during hydration",[173,329,330,331],{},"Related upstream issue:\n",[309,332,333],{"href":333,"rel":334},"https://github.com/nuxt/nuxt/issues/34856",[335],"nofollow",[190,337],{},[168,339,341],{"id":340},"resolution","Resolution",[343,344,346],"h3",{"id":345},"option-a-official-recommended-solution-applied","Option A: Official Recommended Solution (Applied)",[348,349,350,453,475],"ol",{},[200,351,352,356,357,360,361,258,364],{},[353,354,355],"strong",{},"Explicit Route Rules",": Remove the global SPA catch-all (",[177,358,359],{},"/**: { ssr: false }",") which disables SSR globally. Instead, define explicit rendering modes for each route group in ",[177,362,363],{},"nuxt.config.ts",[222,365,367],{"className":224,"code":366,"language":226,"meta":227,"style":227},"routeRules: {\n  '/app/**': { ssr: false },\n  '/dashboard/**': { ssr: false },\n  '/blog/**': { isr: 3600 }\n}\n",[177,368,369,380,403,425,447],{"__ignoreMap":227},[231,370,371,375,377],{"class":233,"line":234},[231,372,374],{"class":373},"sBMFI","routeRules",[231,376,258],{"class":237},[231,378,379],{"class":237}," {\n",[231,381,382,385,388,390,392,394,396,398,400],{"class":233,"line":272},[231,383,384],{"class":237},"  '",[231,386,387],{"class":241},"/app/**",[231,389,238],{"class":237},[231,391,248],{"class":254},[231,393,251],{"class":237},[231,395,255],{"class":254},[231,397,258],{"class":237},[231,399,262],{"class":261},[231,401,402],{"class":237}," 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directly inside ",[177,468,469],{},".vue"," pages using the ",[177,472,473],{},"defineRouteRules"," macro.",[200,476,477,480,481,484],{},[353,478,479],{},"Re-enable Payload Extraction",": Keep ",[177,482,483],{},"payloadExtraction: true"," (default) to ensure efficient data loading and caching.",[343,486,488],{"id":487},"option-b-legacy-trick-alternative","Option B: Legacy \"Trick\" (Alternative)",[173,490,491],{},"If explicit routing is too complex, the following \"trick\" can bypass the hydration crash:",[348,493,494,527],{},[200,495,496,258,499],{},[353,497,498],{},"Disable payload extraction",[222,500,502],{"className":224,"code":501,"language":226,"meta":227,"style":227},"experimental: {\n  payloadExtraction: false\n}\n",[177,503,504,513,523],{"__ignoreMap":227},[231,505,506,509,511],{"class":233,"line":234},[231,507,508],{"class":373},"experimental",[231,510,258],{"class":237},[231,512,379],{"class":237},[231,514,515,518,520],{"class":233,"line":272},[231,516,517],{"class":373}," 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nuxtApp",[231,621,586],{"class":237},[231,623,602],{"class":247},[231,625,586],{"class":237},[231,627,608],{"class":247},[231,629,630],{"class":237}," =",[231,632,633],{"class":553}," reactive",[231,635,557],{"class":254},[231,637,638],{"class":237},"{}",[231,640,641],{"class":254},")\n",[231,643,644],{"class":233,"line":449},[231,645,646],{"class":237},"  }\n",[231,648,650,653],{"class":233,"line":649},6,[231,651,652],{"class":237},"}",[231,654,641],{"class":247},[190,656],{},[168,658,660],{"id":659},"trade-offs","Trade-offs",[173,662,663,664,586],{},"A summary of the trade-offs between the two options is detailed in ",[309,665,667],{"href":666},"#table-1","Table 1",[173,669,670],{},[309,671],{"id":672},"table-1",[674,675,676,692],"table",{},[677,678,679],"thead",{},[680,681,682,686,689],"tr",{},[683,684,685],"th",{},"Approach",[683,687,688],{},"Advantages",[683,690,691],{},"Disadvantages",[693,694,695,709],"tbody",{},[680,696,697,703,706],{},[698,699,700],"td",{},[353,701,702],{},"Option A: Official Way",[698,704,705],{},"Cleanest architecture, fully supported by Nuxt, best performance.",[698,707,708],{},"Requires explicit maintenance of route patterns.",[680,710,711,716,719],{},[698,712,713],{},[353,714,715],{},"Option B: Legacy Trick",[698,717,718],{},"Quickest fix, bypasses hydration crashes without strict routing.",[698,720,721],{},"Inlines payloads in HTML (larger responses), bypasses standard Nuxt hydration logic.",[173,723,724],{},[325,725,726],{},"Table 1: Trade-offs between official and legacy solutions",[190,728],{},[168,730,732],{"id":731},"prevention-next-steps","Prevention / Next Steps",[197,734,735,745,753],{},[200,736,737,744],{},[353,738,739,740,743],{},"Never use a global SPA (",[177,741,742],{},"ssr: false",") fallback"," if your app contains ISR or SSG routes.",[200,746,747,752],{},[353,748,749,750],{},"Use ",[177,751,473],{}," in pages for granular control over pre-rendering.",[200,754,755,758,759,761],{},[353,756,757],{},"Maintain explicit route groupings"," in ",[177,760,363],{}," for large modules.",[763,764,765],"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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